Company lists · Data refreshed November 2026
Top 25 Phase 4 clinical trial services based in the United States
RevenueBase identified 564 company matches for phase 4 clinical trial services associated with the United States as of November 2026 and tracks 58,649 professional contacts across them, including 27,790 with verified work emails. Miami is the largest hub.
This list covers company matches for phase 4 clinical trial services 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 November 6, 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 phase 4 clinical trial services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 19,955 contacts → | ||||
Exact match “PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 11,174 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 6,387 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 3,853 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,947 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,011 contacts → | ||||
Exact match “Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 600 contacts → | ||||
Exact match “DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 357 contacts → | ||||
Exact match “Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 291 contacts → | ||||
Exact match “Science 37 is a modern clinical research site that delivers trials directly to patients’ homes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 272 contacts → | ||||
Exact match “Catalyst Clinical Research is now Worldwide Clinical Trials.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 250 contacts → | ||||
Exact match “Centricity Research is an integrated research organization (IRO) with more than 40 wholly owned and integrated clinical research offices across North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 235 contacts → | ||||
Exact match “Since 2005, KlinEra has partnered with some of the largest pharmaceutical, biotech and device companies, providing innovative and customized clinical trial and research services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 197 contacts → | ||||
Exact match “Headlands Research is a leading globally integrated site organization with a mission to improve patients’ lives by advancing innovative medical therapies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 190 contacts → | ||||
Exact match “Dr.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 176 contacts → | ||||
Exact match “M3 Wake Research is a premier clinical trial network that has been conducting studies since 1984.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 175 contacts → | ||||
Exact match “Founded in 2006, Tekton Research is a multi-specialty clinical research site organization conducting Phase 1-4 clinical trials across neurology and psychiatry, cardiometabolic…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 163 contacts → | ||||
Exact match “Founded in 2007, Spaulding Clinical is a full-service, state-of-the-art paperless Phase I clinical pharmacology unit.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 163 contacts → | ||||
Exact match “Harvest Integrated Research Organization (HiRO) is a globally oriented, innovative clinical research organization (CRO).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 144 contacts → | ||||
Exact match “WCG ThreeWire is a global, full-service patient recruitment provider that partners with pharmaceutical, biotech companies, and clinical research organizations to improve the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 131 contacts → | ||||
Exact match “A contract research organization (CRO) built for collaboration.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 129 contacts → | ||||
Exact match “Calyx and Invicro are now Perceptive!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 122 contacts → | ||||
Exact match “TOTAL TRIALS is a full-service contract research organization (CRO) with the global expertise, responsive approaches and proven solutions to manage complex clinical research…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 114 contacts → | ||||
Exact match “Segal Trials, founded in 1998, is a privately held network of seven research sites throughout South Florida conducting Phase I-IV research trials with a primary emphasis on…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 109 contacts → | ||||
Exact match “Established in 1998 InClin is a full service Contract Research Organization with offices in the San Francisco Bay Area and Sydney, Australia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 87 contacts → | ||||
Exact match “Conquest Research was formed to offer the most efficient clinical research services to partners and pharmaceutical companies worldwide.” Recorded in the RevenueBase company graph · Nov 6, 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 “phase 4 clinical trial services”. 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 564 phase 4 clinical trial services based in the United States
See the full list, filter by size, metro and specialty, and access 27,790 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Phase 4 clinical trial services based in the United States at a glance
As of Nov 6, 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 564 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 “phase 4 clinical trial services” 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 27,790 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 November 6, 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.
Phase 4 clinical trial services by metro
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 “phase 4 clinical trial services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many phase 4 clinical trial services are there based in the United States?
RevenueBase identified 564 company matches for phase 4 clinical trial services associated with the United States as of November 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?
PPD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most phase 4 clinical trial services?
Miami leads with 28 company records, followed by San Diego (12) and Chicago (10).
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 27,790 professional contacts with verified work emails tracked across these 564 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 564 phase 4 clinical trial services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Phase 4 clinical trial services by geography
- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland
- Phase 4 clinical trial services based in the United Kingdom
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland
Company intelligence · public preview
Top 25 phase 4 clinical trial services 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 564 matching company records for phase 4 clinical trial services based in the United States, with 58,649 tracked contacts and 27,790 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: November 6, 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 phase 4 clinical trial services 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 |  PPDppd.comHQ: Wilmington, NC, United StatesReported employees: 10001+ | Wilmington, NC, United States | 10001+ | Exact match | 19,955 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Fortreafortrea.comHQ: Research Triangle Park, NC, United StatesReported employees: 10001+ | Research Triangle Park, NC, United States | 10001+ | Exact match | 11,174 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Medpacemedpace.comHQ: Cincinnati, OH, United StatesReported employees: 5,001-10,000 | Cincinnati, OH, United States | 5,001-10,000 | Exact match | 6,387 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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 | 3,853 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Precision For Medicineprecisionformedicine.comHQ: Bethesda, MD, United StatesReported employees: 1,001-5,000 | Bethesda, MD, United States | 1,001-5,000 | Exact match | 1,947 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Velocity Clinical Research, INCvelocityclinical.comHQ: Durham, SC, United StatesReported employees: 1,001-5,000 | Durham, SC, United States | 1,001-5,000 | Exact match | 1,011 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  DM Clinical Researchdmclinical.comHQ: Houston, IL, United StatesReported employees: 501-1,000 | Houston, IL, United States | 501-1,000 | Exact match | 600 contacts → |
“DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Flourish Researchflourishresearch.comHQ: Apex, FL, United StatesReported employees: 501-1,000 | Apex, FL, United States | 501-1,000 | Exact match | 357 contacts → |
“Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Science 37science37.comHQ: Morrisville, NC, United StatesReported employees: 201-500 | Morrisville, NC, United States | 201-500 | Exact match | 291 contacts → |
“Science 37 is a modern clinical research site that delivers trials directly to patients’ homes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Catalyst Clinical Researchcatalystcr.comHQ: Wilmington, NC, United StatesReported employees: 1,001-5,000 | Wilmington, NC, United States | 1,001-5,000 | Exact match | 272 contacts → |
“Catalyst Clinical Research is now Worldwide Clinical Trials.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Centricity Researchcentricityresearch.comHQ: Columbus, GA, United StatesReported employees: 201-500 | Columbus, GA, United States | 201-500 | Exact match | 250 contacts → |
“Centricity Research is an integrated research organization (IRO) with more than 40 wholly owned and integrated clinical research offices across North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Klinera Global Servicesklinera.comHQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 235 contacts → |
“Since 2005, KlinEra has partnered with some of the largest pharmaceutical, biotech and device companies, providing innovative and customized clinical trial and research services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Headlands Researchheadlandsresearch.comHQ: Lake Worth, AZ, United StatesReported employees: 501-1,000 | Lake Worth, AZ, United States | 501-1,000 | Exact match | 197 contacts → |
“Headlands Research is a leading globally integrated site organization with a mission to improve patients’ lives by advancing innovative medical therapies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Dr. Vince Clinical Researchdrvincecro.comHQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 190 contacts → |
“Dr.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  M3 Wake Researchwakeresearch.comHQ: Raleigh, NC, United StatesReported employees: 201-500 | Raleigh, NC, United States | 201-500 | Exact match | 176 contacts → |
“M3 Wake Research is a premier clinical trial network that has been conducting studies since 1984.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Tekton Researchtektonresearch.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 175 contacts → |
“Founded in 2006, Tekton Research is a multi-specialty clinical research site organization conducting Phase 1-4 clinical trials across neurology and psychiatry, cardiometabolic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Spaulding Clinical Research, LLCspauldingclinical.comHQ: West Bend, WI, United StatesReported employees: 51-200 | West Bend, WI, United States | 51-200 | Exact match | 163 contacts → |
“Founded in 2007, Spaulding Clinical is a full-service, state-of-the-art paperless Phase I clinical pharmacology unit.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  HIROharvestiro.comHQ: Somerset, NJ, United StatesReported employees: 201-500 | Somerset, NJ, United States | 201-500 | Exact match | 163 contacts → |
“Harvest Integrated Research Organization (HiRO) is a globally oriented, innovative clinical research organization (CRO).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  WCG Threewirethreewire.comHQ: Eden Prairie, MN, United StatesReported employees: 51-200 | Eden Prairie, MN, United States | 51-200 | Exact match | 144 contacts → |
“WCG ThreeWire is a global, full-service patient recruitment provider that partners with pharmaceutical, biotech companies, and clinical research organizations to improve the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Pharpoint Research, INCpharpoint.comHQ: Durham, NC, United StatesReported employees: 51-200 | Durham, NC, United States | 51-200 | Exact match | 131 contacts → |
“A contract research organization (CRO) built for collaboration.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Invicroperceptive.comHQ: Needham, CT, United StatesReported employees: 201-500 | Needham, CT, United States | 201-500 | Exact match | 129 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  FHI Clinical INCfhiclinical.comHQ: Durham, NC, United StatesReported employees: 51-200 | Durham, NC, United States | 51-200 | Exact match | 122 contacts → |
“TOTAL TRIALS is a full-service contract research organization (CRO) with the global expertise, responsive approaches and proven solutions to manage complex clinical research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Segal Trialssegaltrials.comHQ: Miami Lakes, FL, United StatesReported employees: 51-200 | Miami Lakes, FL, United States | 51-200 | Exact match | 114 contacts → |
“Segal Trials, founded in 1998, is a privately held network of seven research sites throughout South Florida conducting Phase I-IV research trials with a primary emphasis on…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Inclin, INCinclin.comHQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 109 contacts → |
“Established in 1998 InClin is a full service Contract Research Organization with offices in the San Francisco Bay Area and Sydney, Australia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Conquest Researchconquestresearch.comHQ: Winter Park, FL, United StatesReported employees: 51-200 | Winter Park, FL, United States | 51-200 | Exact match | 87 contacts → |
“Conquest Research was formed to offer the most efficient clinical research services to partners and pharmaceutical companies worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 564 company matches
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Phase 4 clinical trial services: dataset insights
November 6, 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
562 records in the displayed employee bands.
2 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 564 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: November 6, 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 ↗
Phase 4 clinical trial services by metro
Questions about this company list
What does Exact match mean for phase 4 clinical trial services?
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 phase 4 clinical trial services did RevenueBase find based in the United States?
The saved snapshot records 564 matching company records, 58,649 tracked contacts and 27,790 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: November 6, 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
Phase 4 clinical trial services by geography
- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland
- Phase 4 clinical trial services based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 phase 4 clinical trial services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/phase-4-clinical-trial-services/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
- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland
Company intelligence · public preview
Top 25 phase 4 clinical trial services based in the United States
RevenueBase records 564 matching company records for phase 4 clinical trial services based in the United States, with 58,649 tracked contacts and 27,790 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: November 6, 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 phase 4 clinical trial services 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 | PPDppd.com HQ: Wilmington, NC, United StatesReported employees: 10001+ | Wilmington, NC, United States | 10001+ | Exact match | 19,955 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Fortreafortrea.com HQ: Research Triangle Park, NC, United StatesReported employees: 10001+ | Research Triangle Park, NC, United States | 10001+ | Exact match | 11,174 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Medpacemedpace.com HQ: Cincinnati, OH, United StatesReported employees: 5,001-10,000 | Cincinnati, OH, United States | 5,001-10,000 | Exact match | 6,387 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 | 3,853 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Precision For Medicineprecisionformedicine.com HQ: Bethesda, MD, United StatesReported employees: 1,001-5,000 | Bethesda, MD, United States | 1,001-5,000 | Exact match | 1,947 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Velocity Clinical Research, INCvelocityclinical.com HQ: Durham, SC, United StatesReported employees: 1,001-5,000 | Durham, SC, United States | 1,001-5,000 | Exact match | 1,011 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | DM Clinical Researchdmclinical.com HQ: Houston, IL, United StatesReported employees: 501-1,000 | Houston, IL, United States | 501-1,000 | Exact match | 600 contacts → |
“DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Flourish Researchflourishresearch.com HQ: Apex, FL, United StatesReported employees: 501-1,000 | Apex, FL, United States | 501-1,000 | Exact match | 357 contacts → |
“Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Science 37science37.com HQ: Morrisville, NC, United StatesReported employees: 201-500 | Morrisville, NC, United States | 201-500 | Exact match | 291 contacts → |
“Science 37 is a modern clinical research site that delivers trials directly to patients’ homes.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Catalyst Clinical Researchcatalystcr.com HQ: Wilmington, NC, United StatesReported employees: 1,001-5,000 | Wilmington, NC, United States | 1,001-5,000 | Exact match | 272 contacts → |
“Catalyst Clinical Research is now Worldwide Clinical Trials.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Centricity Researchcentricityresearch.com HQ: Columbus, GA, United StatesReported employees: 201-500 | Columbus, GA, United States | 201-500 | Exact match | 250 contacts → |
“Centricity Research is an integrated research organization (IRO) with more than 40 wholly owned and integrated clinical research offices across North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Klinera Global Servicesklinera.com HQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 235 contacts → |
“Since 2005, KlinEra has partnered with some of the largest pharmaceutical, biotech and device companies, providing innovative and customized clinical trial and research services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Headlands Researchheadlandsresearch.com HQ: Lake Worth, AZ, United StatesReported employees: 501-1,000 | Lake Worth, AZ, United States | 501-1,000 | Exact match | 197 contacts → |
“Headlands Research is a leading globally integrated site organization with a mission to improve patients’ lives by advancing innovative medical therapies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Dr. Vince Clinical Researchdrvincecro.com HQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 190 contacts → |
“Dr.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | M3 Wake Researchwakeresearch.com HQ: Raleigh, NC, United StatesReported employees: 201-500 | Raleigh, NC, United States | 201-500 | Exact match | 176 contacts → |
“M3 Wake Research is a premier clinical trial network that has been conducting studies since 1984.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Tekton Researchtektonresearch.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 175 contacts → |
“Founded in 2006, Tekton Research is a multi-specialty clinical research site organization conducting Phase 1-4 clinical trials across neurology and psychiatry, cardiometabolic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Spaulding Clinical Research, LLCspauldingclinical.com HQ: West Bend, WI, United StatesReported employees: 51-200 | West Bend, WI, United States | 51-200 | Exact match | 163 contacts → |
“Founded in 2007, Spaulding Clinical is a full-service, state-of-the-art paperless Phase I clinical pharmacology unit.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HIROharvestiro.com HQ: Somerset, NJ, United StatesReported employees: 201-500 | Somerset, NJ, United States | 201-500 | Exact match | 163 contacts → |
“Harvest Integrated Research Organization (HiRO) is a globally oriented, innovative clinical research organization (CRO).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | WCG Threewirethreewire.com HQ: Eden Prairie, MN, United StatesReported employees: 51-200 | Eden Prairie, MN, United States | 51-200 | Exact match | 144 contacts → |
“WCG ThreeWire is a global, full-service patient recruitment provider that partners with pharmaceutical, biotech companies, and clinical research organizations to improve the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Pharpoint Research, INCpharpoint.com HQ: Durham, NC, United StatesReported employees: 51-200 | Durham, NC, United States | 51-200 | Exact match | 131 contacts → |
“A contract research organization (CRO) built for collaboration.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Invicroperceptive.com HQ: Needham, CT, United StatesReported employees: 201-500 | Needham, CT, United States | 201-500 | Exact match | 129 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | FHI Clinical INCfhiclinical.com HQ: Durham, NC, United StatesReported employees: 51-200 | Durham, NC, United States | 51-200 | Exact match | 122 contacts → |
“TOTAL TRIALS is a full-service contract research organization (CRO) with the global expertise, responsive approaches and proven solutions to manage complex clinical research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Segal Trialssegaltrials.com HQ: Miami Lakes, FL, United StatesReported employees: 51-200 | Miami Lakes, FL, United States | 51-200 | Exact match | 114 contacts → |
“Segal Trials, founded in 1998, is a privately held network of seven research sites throughout South Florida conducting Phase I-IV research trials with a primary emphasis on…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Inclin, INCinclin.com HQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 109 contacts → |
“Established in 1998 InClin is a full service Contract Research Organization with offices in the San Francisco Bay Area and Sydney, Australia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Conquest Researchconquestresearch.com HQ: Winter Park, FL, United StatesReported employees: 51-200 | Winter Park, FL, United States | 51-200 | Exact match | 87 contacts → |
“Conquest Research was formed to offer the most efficient clinical research services to partners and pharmaceutical companies worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 564 company matches
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Phase 4 clinical trial services: dataset insights
November 6, 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
562 records in the displayed employee bands.
2 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 564 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: November 6, 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 ↗
Phase 4 clinical trial services by metro
Questions about this company list
What does Exact match mean for phase 4 clinical trial services?
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 phase 4 clinical trial services did RevenueBase find based in the United States?
The saved snapshot records 564 matching company records, 58,649 tracked contacts and 27,790 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: November 6, 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
Phase 4 clinical trial services by geography
- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland
- Phase 4 clinical trial services based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 phase 4 clinical trial services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/phase-4-clinical-trial-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Phase 4 clinical trial services based in Miami, United States
- Phase 4 clinical trial services based in Australia
- Phase 4 clinical trial services based in Canada
- Phase 4 clinical trial services based in Germany
- Phase 4 clinical trial services based in India
- Phase 4 clinical trial services based in Poland