Company lists · Data refreshed October 2026
Top 25 Early phase clinical research organizations based in the United States
RevenueBase identified 2,620 company matches for early phase clinical research organizations associated with the United States as of October 2026 and tracks 173,212 professional contacts across them, including 77,077 with verified work emails. Miami is the largest hub.
This list covers company matches for early phase clinical research organizations associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 11, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest early phase clinical research organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 19,864 contacts → | ||||
Exact match “Parexel is a leading global clinical research organization (CRO) providing insights-driven Clinical and Consulting solutions to the world’s life sciences industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 2 | 19,757 contacts → | ||||
Exact match “PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 3 | 10,915 contacts → | ||||
Exact match “Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 4 | 6,234 contacts → | ||||
Exact match “Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 5 | 5,059 contacts → | ||||
Exact match “As the drug development business of Laboratory Corporation of America Holdings (Labcorp) and the world’s most comprehensive drug development #CRO service company, we have helped…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 6 | 3,794 contacts → | ||||
Exact match “Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 7 | 3,218 contacts → | ||||
Exact match “EVERSANA® is a leading independent provider of global services to the life sciences industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 8 | 2,678 contacts → | ||||
Exact match “Medidata is powering smarter treatments and healthier people through digital solutions to support clinical trials.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 9 | 2,670 contacts → | ||||
Exact match “Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 10 | 2,144 contacts → | ||||
Exact match “At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 11 | 2,127 contacts → | ||||
Exact match “For 25+ years, Signant Health has been pioneering solutions and methodologies that propel clinical research programs toward regulatory success.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 12 | 1,917 contacts → | ||||
Exact match “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 13 | 1,604 contacts → | ||||
Exact match “Advarra provides the platform, insights, and expertise that make clinical trials more efficient and connected.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 14 | 1,574 contacts → | ||||
Exact match “Cytel is the world’s leading data-science CRO, driving advancements in human health through robust analytics and innovative clinical trial software.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 15 | 1,572 contacts → | ||||
Exact match “ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 16 | 1,313 contacts → | ||||
Exact match “Helping medical device Sponsors improve healthcare since 1967, NAMSA is the world’s leading MedTech Contract Research Organization (CRO) offering global end-to-end development…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 17 | 1,303 contacts → | ||||
Exact match “Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 18 | 1,179 contacts → | ||||
Exact match “WCG is a true partner to research sponsors, CROs, sites and participants in navigating the clinical research journey.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 19 | 1,151 contacts → | ||||
Exact match “Celerion, a leader in early clinical research, delivers Applied Translational Medicine.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 20 | 1,102 contacts → | ||||
Exact match “CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 21 | 1,061 contacts → | ||||
Exact match “WHERE INSIGHTS LEAD TO ANSWERS Expect More In choosing a partner for discovery, development and research models, expect more: more attention, more insight, and a superlative…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 22 | 1,001 contacts → | ||||
Exact match “Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 23 | 991 contacts → | ||||
Exact match “Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 24 | 977 contacts → | ||||
Exact match “Advanced Clinical is a clinical development and strategic resourcing organization committed to providing a better clinical experience across the drug development journey.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 25 | 946 contacts → | ||||
Exact match “Allucent is on a mission to help bring new therapies to light by solving the distinct challenges of small and mid-sized biotech companies.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “early phase clinical research organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,620 early phase clinical research organizations based in the United States
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Early phase clinical research organizations based in the United States at a glance
As of Oct 11, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,620 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “early phase clinical research organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 77,077 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 11, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Early phase clinical research organizations by metro
- Early phase clinical research organizations in Miami79
- Early phase clinical research organizations in New York68
- Early phase clinical research organizations in Houston64
- Early phase clinical research organizations in San Diego59
- Early phase clinical research organizations in Boston55
- Early phase clinical research organizations in Durham38
- Early phase clinical research organizations in Austin35
- Early phase clinical research organizations in Princeton35
- Early phase clinical research organizations in Raleigh35
- Early phase clinical research organizations in Chicago33
- Early phase clinical research organizations in Atlanta32
- Early phase clinical research organizations in San Francisco31
- Early phase clinical research organizations in Los Angeles28
- Early phase clinical research organizations in Dallas26
- Early phase clinical research organizations in San Antonio25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “early phase clinical research organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many early phase clinical research organizations are there based in the United States?
RevenueBase identified 2,620 company matches for early phase clinical research organizations associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Parexel tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most early phase clinical research organizations?
Miami leads with 79 company records, followed by New York (68) and Houston (64).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 77,077 professional contacts with verified work emails tracked across these 2,620 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 11, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,620 early phase clinical research organizations based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Early phase clinical research organizations by geography
- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany
- Early phase clinical research organizations based in Ahmedabad, India
- Early phase clinical research organizations based in Bangalore, India
- Early phase clinical research organizations based in Hyderabad, India
- Early phase clinical research organizations based in Navi Mumbai, India
- Early phase clinical research organizations based in Pune, India
- Early phase clinical research organizations based in Warsaw, Poland
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany
Company intelligence · public preview
Top 25 early phase clinical research organizations based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,620 matching company records for early phase clinical research organizations based in the United States, with 173,212 tracked contacts and 77,077 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 11, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 early phase clinical research organizations based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Parexelparexel.comHQ: Raleigh, NC, United StatesReported employees: 10001+ | Raleigh, NC, United States | 10001+ | Exact match | 19,864 contacts → |
“Parexel is a leading global clinical research organization (CRO) providing insights-driven Clinical and Consulting solutions to the world’s life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  PPDppd.comHQ: Wilmington, NC, United StatesReported employees: 10001+ | Wilmington, NC, United States | 10001+ | Exact match | 19,757 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Fortreafortrea.comHQ: Research Triangle Park, NC, United StatesReported employees: 10001+ | Research Triangle Park, NC, United States | 10001+ | Exact match | 10,915 contacts → |
“Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Medpacemedpace.comHQ: Cincinnati, OH, United StatesReported employees: 5,001-10,000 | Cincinnati, OH, United States | 5,001-10,000 | Exact match | 6,234 contacts → |
“Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Covancebiopharma.labcorp.comHQ: Princeton, NJ, United StatesReported employees: 10001+ | Princeton, NJ, United States | 10001+ | Exact match | 5,059 contacts → |
“As the drug development business of Laboratory Corporation of America Holdings (Labcorp) and the world’s most comprehensive drug development #CRO service company, we have helped…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Worldwide Clinical Trialsworldwide.comHQ: Research Triangle Park, NC, United StatesReported employees: 1,001-5,000 | Research Triangle Park, NC, United States | 1,001-5,000 | Exact match | 3,794 contacts → |
“Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Eversanaeversana.comHQ: Chicago, IL, United StatesReported employees: 5,001-10,000 | Chicago, IL, United States | 5,001-10,000 | Exact match | 3,218 contacts → |
“EVERSANA® is a leading independent provider of global services to the life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Medidata Solutionsmedidata.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,678 contacts → |
“Medidata is powering smarter treatments and healthier people through digital solutions to support clinical trials.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Premier Researchpremier-research.comHQ: Morrisville, NC, United StatesReported employees: 1,001-5,000 | Morrisville, NC, United States | 1,001-5,000 | Exact match | 2,670 contacts → |
“Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Propharmapropharmagroup.comHQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 2,144 contacts → |
“At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Signant Healthsignanthealth.comHQ: Blue Bell, PA, United StatesReported employees: 1,001-5,000 | Blue Bell, PA, United States | 1,001-5,000 | Exact match | 2,127 contacts → |
“For 25+ years, Signant Health has been pioneering solutions and methodologies that propel clinical research programs toward regulatory success.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Precision For Medicineprecisionformedicine.comHQ: Bethesda, MD, United StatesReported employees: 1,001-5,000 | Bethesda, MD, United States | 1,001-5,000 | Exact match | 1,917 contacts → |
“Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Advarraadvarra.comHQ: Columbia, MD, United StatesReported employees: 501-1,000 | Columbia, MD, United States | 501-1,000 | Exact match | 1,604 contacts → |
“Advarra provides the platform, insights, and expertise that make clinical trials more efficient and connected.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  CYTELcytel.comHQ: Cambridge, MA, United StatesReported employees: 1,001-5,000 | Cambridge, MA, United States | 1,001-5,000 | Exact match | 1,574 contacts → |
“Cytel is the world’s leading data-science CRO, driving advancements in human health through robust analytics and innovative clinical trial software.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Clinchoiceclinchoice.comHQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 1,572 contacts → |
“ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  NAMSAnamsa.comHQ: Toledo, OH, United StatesReported employees: 1,001-5,000 | Toledo, OH, United States | 1,001-5,000 | Exact match | 1,313 contacts → |
“Helping medical device Sponsors improve healthcare since 1967, NAMSA is the world’s leading MedTech Contract Research Organization (CRO) offering global end-to-end development…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Suvodasuvoda.comHQ: Conshohocken, PA, United StatesReported employees: 1,001-5,000 | Conshohocken, PA, United States | 1,001-5,000 | Exact match | 1,303 contacts → |
“Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  WCGwcgclinical.comHQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 1,179 contacts → |
“WCG is a true partner to research sponsors, CROs, sites and participants in navigating the clinical research journey.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Celerioncelerion.comHQ: Lincoln, NE, United StatesReported employees: 1,001-5,000 | Lincoln, NE, United States | 1,001-5,000 | Exact match | 1,151 contacts → |
“Celerion, a leader in early clinical research, delivers Applied Translational Medicine.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  CTI Clinical Trial And Consulting Servicesctifacts.comHQ: Covington, KY, United StatesReported employees: 1,001-5,000 | Covington, KY, United States | 1,001-5,000 | Exact match | 1,102 contacts → |
“CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Inotivinotiv.comHQ: West Lafayette, IN, United StatesReported employees: 1,001-5,000 | West Lafayette, IN, United States | 1,001-5,000 | Exact match | 1,061 contacts → |
“WHERE INSIGHTS LEAD TO ANSWERS Expect More In choosing a partner for discovery, development and research models, expect more: more attention, more insight, and a superlative…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Navitas Life Sciencesnavitaslifesciences.comHQ: Gaithersburg, MD, United StatesReported employees: 1,001-5,000 | Gaithersburg, MD, United States | 1,001-5,000 | Exact match | 1,001 contacts → |
“Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Velocity Clinical Research, INCvelocityclinical.comHQ: Durham, NC, United StatesReported employees: 1,001-5,000 | Durham, NC, United States | 1,001-5,000 | Exact match | 991 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Advanced Clinicaladvancedclinical.comHQ: Deerfield, IL, United StatesReported employees: 501-1,000 | Deerfield, IL, United States | 501-1,000 | Exact match | 977 contacts → |
“Advanced Clinical is a clinical development and strategic resourcing organization committed to providing a better clinical experience across the drug development journey.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Allucentallucent.comHQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 946 contacts → |
“Allucent is on a mission to help bring new therapies to light by solving the distinct challenges of small and mid-sized biotech companies.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,620 company matches
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Early phase clinical research organizations: dataset insights
October 11, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,616 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,620 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 11, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Early phase clinical research organizations by metro
- Early phase clinical research organizations in Miami79
- Early phase clinical research organizations in New York68
- Early phase clinical research organizations in Houston64
- Early phase clinical research organizations in San Diego59
- Early phase clinical research organizations in Boston55
- Early phase clinical research organizations in Durham38
- Early phase clinical research organizations in Austin35
- Early phase clinical research organizations in Princeton35
- Early phase clinical research organizations in Raleigh35
- Early phase clinical research organizations in Chicago33
- Early phase clinical research organizations in Atlanta32
- Early phase clinical research organizations in San Francisco31
- Early phase clinical research organizations in Los Angeles28
- Early phase clinical research organizations in Dallas26
- Early phase clinical research organizations in San Antonio25
Questions about this company list
What does Exact match mean for early phase clinical research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many early phase clinical research organizations did RevenueBase find based in the United States?
The saved snapshot records 2,620 matching company records, 173,212 tracked contacts and 77,077 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 11, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Early phase clinical research organizations by geography
- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany
- Early phase clinical research organizations based in Ahmedabad, India
- Early phase clinical research organizations based in Bangalore, India
- Early phase clinical research organizations based in Hyderabad, India
- Early phase clinical research organizations based in Navi Mumbai, India
- Early phase clinical research organizations based in Pune, India
- Early phase clinical research organizations based in Warsaw, Poland
Cite this list
RevenueBase Data Team. Top 25 early phase clinical research organizations based in the United States. Snapshot: October 11, 2026. https://revenuebase.ai/companies/early-phase-clinical-research-organizations/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany
Company intelligence · public preview
Top 25 early phase clinical research organizations based in the United States
RevenueBase records 2,620 matching company records for early phase clinical research organizations based in the United States, with 173,212 tracked contacts and 77,077 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 11, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 early phase clinical research organizations based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Parexelparexel.com HQ: Raleigh, NC, United StatesReported employees: 10001+ | Raleigh, NC, United States | 10001+ | Exact match | 19,864 contacts → |
“Parexel is a leading global clinical research organization (CRO) providing insights-driven Clinical and Consulting solutions to the world’s life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | PPDppd.com HQ: Wilmington, NC, United StatesReported employees: 10001+ | Wilmington, NC, United States | 10001+ | Exact match | 19,757 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Fortreafortrea.com HQ: Research Triangle Park, NC, United StatesReported employees: 10001+ | Research Triangle Park, NC, United States | 10001+ | Exact match | 10,915 contacts → |
“Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Medpacemedpace.com HQ: Cincinnati, OH, United StatesReported employees: 5,001-10,000 | Cincinnati, OH, United States | 5,001-10,000 | Exact match | 6,234 contacts → |
“Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Covancebiopharma.labcorp.com HQ: Princeton, NJ, United StatesReported employees: 10001+ | Princeton, NJ, United States | 10001+ | Exact match | 5,059 contacts → |
“As the drug development business of Laboratory Corporation of America Holdings (Labcorp) and the world’s most comprehensive drug development #CRO service company, we have helped…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Worldwide Clinical Trialsworldwide.com HQ: Research Triangle Park, NC, United StatesReported employees: 1,001-5,000 | Research Triangle Park, NC, United States | 1,001-5,000 | Exact match | 3,794 contacts → |
“Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Eversanaeversana.com HQ: Chicago, IL, United StatesReported employees: 5,001-10,000 | Chicago, IL, United States | 5,001-10,000 | Exact match | 3,218 contacts → |
“EVERSANA® is a leading independent provider of global services to the life sciences industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Medidata Solutionsmedidata.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,678 contacts → |
“Medidata is powering smarter treatments and healthier people through digital solutions to support clinical trials.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Premier Researchpremier-research.com HQ: Morrisville, NC, United StatesReported employees: 1,001-5,000 | Morrisville, NC, United States | 1,001-5,000 | Exact match | 2,670 contacts → |
“Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Propharmapropharmagroup.com HQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 2,144 contacts → |
“At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Signant Healthsignanthealth.com HQ: Blue Bell, PA, United StatesReported employees: 1,001-5,000 | Blue Bell, PA, United States | 1,001-5,000 | Exact match | 2,127 contacts → |
“For 25+ years, Signant Health has been pioneering solutions and methodologies that propel clinical research programs toward regulatory success.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Precision For Medicineprecisionformedicine.com HQ: Bethesda, MD, United StatesReported employees: 1,001-5,000 | Bethesda, MD, United States | 1,001-5,000 | Exact match | 1,917 contacts → |
“Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Advarraadvarra.com HQ: Columbia, MD, United StatesReported employees: 501-1,000 | Columbia, MD, United States | 501-1,000 | Exact match | 1,604 contacts → |
“Advarra provides the platform, insights, and expertise that make clinical trials more efficient and connected.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | CYTELcytel.com HQ: Cambridge, MA, United StatesReported employees: 1,001-5,000 | Cambridge, MA, United States | 1,001-5,000 | Exact match | 1,574 contacts → |
“Cytel is the world’s leading data-science CRO, driving advancements in human health through robust analytics and innovative clinical trial software.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Clinchoiceclinchoice.com HQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 1,572 contacts → |
“ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | NAMSAnamsa.com HQ: Toledo, OH, United StatesReported employees: 1,001-5,000 | Toledo, OH, United States | 1,001-5,000 | Exact match | 1,313 contacts → |
“Helping medical device Sponsors improve healthcare since 1967, NAMSA is the world’s leading MedTech Contract Research Organization (CRO) offering global end-to-end development…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Suvodasuvoda.com HQ: Conshohocken, PA, United StatesReported employees: 1,001-5,000 | Conshohocken, PA, United States | 1,001-5,000 | Exact match | 1,303 contacts → |
“Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | WCGwcgclinical.com HQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 1,179 contacts → |
“WCG is a true partner to research sponsors, CROs, sites and participants in navigating the clinical research journey.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Celerioncelerion.com HQ: Lincoln, NE, United StatesReported employees: 1,001-5,000 | Lincoln, NE, United States | 1,001-5,000 | Exact match | 1,151 contacts → |
“Celerion, a leader in early clinical research, delivers Applied Translational Medicine.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | CTI Clinical Trial And Consulting Servicesctifacts.com HQ: Covington, KY, United StatesReported employees: 1,001-5,000 | Covington, KY, United States | 1,001-5,000 | Exact match | 1,102 contacts → |
“CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Inotivinotiv.com HQ: West Lafayette, IN, United StatesReported employees: 1,001-5,000 | West Lafayette, IN, United States | 1,001-5,000 | Exact match | 1,061 contacts → |
“WHERE INSIGHTS LEAD TO ANSWERS Expect More In choosing a partner for discovery, development and research models, expect more: more attention, more insight, and a superlative…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Navitas Life Sciencesnavitaslifesciences.com HQ: Gaithersburg, MD, United StatesReported employees: 1,001-5,000 | Gaithersburg, MD, United States | 1,001-5,000 | Exact match | 1,001 contacts → |
“Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Velocity Clinical Research, INCvelocityclinical.com HQ: Durham, NC, United StatesReported employees: 1,001-5,000 | Durham, NC, United States | 1,001-5,000 | Exact match | 991 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Advanced Clinicaladvancedclinical.com HQ: Deerfield, IL, United StatesReported employees: 501-1,000 | Deerfield, IL, United States | 501-1,000 | Exact match | 977 contacts → |
“Advanced Clinical is a clinical development and strategic resourcing organization committed to providing a better clinical experience across the drug development journey.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Allucentallucent.com HQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 946 contacts → |
“Allucent is on a mission to help bring new therapies to light by solving the distinct challenges of small and mid-sized biotech companies.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,620 company matches
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Early phase clinical research organizations: dataset insights
October 11, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,616 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,620 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 11, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Early phase clinical research organizations by metro
- Early phase clinical research organizations in Miami79
- Early phase clinical research organizations in New York68
- Early phase clinical research organizations in Houston64
- Early phase clinical research organizations in San Diego59
- Early phase clinical research organizations in Boston55
- Early phase clinical research organizations in Durham38
- Early phase clinical research organizations in Austin35
- Early phase clinical research organizations in Princeton35
- Early phase clinical research organizations in Raleigh35
- Early phase clinical research organizations in Chicago33
- Early phase clinical research organizations in Atlanta32
- Early phase clinical research organizations in San Francisco31
- Early phase clinical research organizations in Los Angeles28
- Early phase clinical research organizations in Dallas26
- Early phase clinical research organizations in San Antonio25
Questions about this company list
What does Exact match mean for early phase clinical research organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many early phase clinical research organizations did RevenueBase find based in the United States?
The saved snapshot records 2,620 matching company records, 173,212 tracked contacts and 77,077 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 11, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Early phase clinical research organizations by geography
- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany
- Early phase clinical research organizations based in Ahmedabad, India
- Early phase clinical research organizations based in Bangalore, India
- Early phase clinical research organizations based in Hyderabad, India
- Early phase clinical research organizations based in Navi Mumbai, India
- Early phase clinical research organizations based in Pune, India
- Early phase clinical research organizations based in Warsaw, Poland
Cite this list
RevenueBase Data Team. Top 25 early phase clinical research organizations based in the United States. Snapshot: October 11, 2026. https://revenuebase.ai/companies/early-phase-clinical-research-organizations/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Early phase clinical research organizations based in Melbourne, Australia
- Early phase clinical research organizations based in Sao Paulo, Brazil
- Early phase clinical research organizations based in Montreal, Canada
- Early phase clinical research organizations based in Toronto, Canada
- Early phase clinical research organizations based in Paris, France
- Early phase clinical research organizations based in Berlin, Germany