Company lists · Data refreshed November 2026
Top 25 Patient recruitment services worldwide
RevenueBase identified 1,850 company matches for patient recruitment services worldwide as of November 2026 and tracks 95,003 professional contacts across them, including 41,970 with verified work emails. The United States is the largest market and Miami the largest hub.
This list covers company matches for patient recruitment services worldwide, 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 5, 2026. Country and city lists for patient recruitment services follow the table.
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 patient recruitment services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,436 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 · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 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 5, 2026 · View company records in RevenueBase | |||||
| 3 | 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 5, 2026 · View company records in RevenueBase | |||||
| 4 | 2,693 contacts → | ||||
Exact match “PSI is a leading full-service global Contract Research Organization whose key strength is predictable patient enrollment across multiple therapeutic areas.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 1,965 contacts → | ||||
Exact match “Novotech is a globally recognized full-service clinical research organization (CRO) and scientific advisory company that provides biotech and small- to mid-sized pharma companies…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 1,383 contacts → | ||||
Exact match “We partner with innovator and generic companies using our high-quality infrastructure and a global network of clinical trial sites, to launch novel therapies and new products for…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 1,269 contacts → | ||||
Exact match “Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 1,137 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 · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 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 5, 2026 · View company records in RevenueBase | |||||
| 10 | 894 contacts → | ||||
Exact match “CenExel is a leading integrated, wholly owned, nationwide clinical research site network comprised of 18 Centers of Excellence in major metropolitan areas across the U.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 802 contacts → | ||||
Exact match “MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 753 contacts → | ||||
Exact match “Experience the Cohesion Effect.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 682 contacts → | ||||
Exact match “Excelya is an independent partner that serves Biotech, Pharma, and Medical Device organizations with a comprehensive range of Full-service CRO, FSP, and Resourcing solutions…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 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 5, 2026 · View company records in RevenueBase | |||||
| 15 | 560 contacts → | ||||
Exact match “Established in 1997, Ergomed is a global leader in delivering specialized services in oncology, rare disease, and complex trials to the pharmaceutical and biotech sectors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 551 contacts → | ||||
Exact match “AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 539 contacts → | ||||
Exact match “Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 537 contacts → | ||||
Exact match “THIS PAGE IS NOT MONITORED.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 446 contacts → | ||||
Exact match “Avance Clinical is a full-service Contract Research Organization (CRO) headquartered in Australia, with extensive operations across New Zealand, Asia, North America, and Europe.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 440 contacts → | ||||
Exact match “Calyx and Invicro are now Perceptive!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 390 contacts → | ||||
Exact match “Sitero is a next-generation, site-focused clinical research organization (CRO) for life sciences and institutional research organizations that helps get treatments to market safer…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 371 contacts → | ||||
Exact match “At WEP Clinical, we operate as a specialist CRO with a proven track record of excellence in designing, managing, and executing Clinical Trials, Expanded Access Programs (EAPs)…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 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 5, 2026 · View company records in RevenueBase | |||||
| 24 | 344 contacts → | ||||
Exact match “MEDEX is an organization that specializes in managing clinical research sites.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 343 contacts → | ||||
Exact match “Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded in the RevenueBase company graph · Nov 5, 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 “patient recruitment 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 1,850 patient recruitment services worldwide
See the full list, filter by size, metro and specialty, and access 41,970 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Patient recruitment services worldwide at a glance
As of Nov 5, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for patient recruitment services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “patient recruitment 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. 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 41,970 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 5, 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.
Patient recruitment services by location
9 lists · largest firstEvery Patient recruitment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Patient recruitment services based in the United States825
- Patient recruitment services based in India101
- Patient recruitment services based in the United Kingdom94
- Patient recruitment services based in Australia45
- Patient recruitment services based in Canada41
- Patient recruitment services based in Germany39
- Patient recruitment services based in Poland27
Cities
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 “patient recruitment services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many patient recruitment services are there worldwide?
RevenueBase identified 1,850 company matches for patient recruitment services worldwide 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?
Parexel tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most patient recruitment services?
The United States leads with 825 companies, followed by India (101) and the United Kingdom (94). Every patient recruitment services list by country and city is linked on this page.
Which city has the most patient recruitment services?
Miami leads with 35 company records, followed by New York (25) and London (24).
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 41,970 professional contacts with verified work emails tracked across these 1,850 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,850 patient recruitment services worldwide. Start with a free account, no credit card.
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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
Company intelligence · public preview
Top 25 patient recruitment services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,850 matching company records for patient recruitment services worldwide, with 95,003 tracked contacts and 41,970 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 5, 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 patient recruitment services worldwide
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 | 20,436 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  PPDppd.comHQ: Wilmington, NC, United StatesReported employees: 10001+ | Wilmington, NC, United States | 10001+ | Exact match | 19,955 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  PSI CROpsi-cro.comHQ: Zug, SwitzerlandReported employees: 1,001-5,000 | Zug, Switzerland | 1,001-5,000 | Exact match | 2,693 contacts → |
“PSI is a leading full-service global Contract Research Organization whose key strength is predictable patient enrollment across multiple therapeutic areas.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Novotechnovotech-cro.comHQ: Singapore, AustraliaReported employees: 1,001-5,000 | Singapore, Australia | 1,001-5,000 | Exact match | 1,965 contacts → |
“Novotech is a globally recognized full-service clinical research organization (CRO) and scientific advisory company that provides biotech and small- to mid-sized pharma companies…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Veeda Lifesciencesveedalifesciences.comHQ: Ahmedabad, IndiaReported employees: 501-1,000 | Ahmedabad, India | 501-1,000 | Exact match | 1,383 contacts → |
“We partner with innovator and generic companies using our high-quality infrastructure and a global network of clinical trial sites, to launch novel therapies and new products for…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Perceptive INCperceptive.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,269 contacts → |
“Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  CTI Clinical Trial And Consulting Servicesctifacts.comHQ: Covington, United StatesReported employees: 1,001-5,000 | Covington, United States | 1,001-5,000 | Exact match | 1,137 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cenexelcenexel.comHQ: Salt Lake City, UT, United StatesReported employees: 1,001-5,000 | Salt Lake City, UT, United States | 1,001-5,000 | Exact match | 894 contacts → |
“CenExel is a leading integrated, wholly owned, nationwide clinical research site network comprised of 18 Centers of Excellence in major metropolitan areas across the U.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  MMGmmgct.comHQ: Rockville, MD, United StatesReported employees: Not recorded | Rockville, MD, United States | Not recorded | Exact match | 802 contacts → |
“MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  RHOrhoworld.comHQ: Durham, NC, United StatesReported employees: 501-1,000 | Durham, NC, United States | 501-1,000 | Exact match | 753 contacts → |
“Experience the Cohesion Effect.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Excelyaexcelya.comHQ: Boulogne-billancourt, FranceReported employees: 501-1,000 | Boulogne-billancourt, France | 501-1,000 | Exact match | 682 contacts → |
“Excelya is an independent partner that serves Biotech, Pharma, and Medical Device organizations with a comprehensive range of Full-service CRO, FSP, and Resourcing solutions…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Ergomedergomedcro.comHQ: Guildford, United KingdomReported employees: 1,001-5,000 | Guildford, United Kingdom | 1,001-5,000 | Exact match | 560 contacts → |
“Established in 1997, Ergomed is a global leader in delivering specialized services in oncology, rare disease, and complex trials to the pharmaceutical and biotech sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Axis Clinicals LTDaxisclinicals.comHQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 551 contacts → |
“AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Accelerated Enrollment Solutionstrialmed.comHQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 539 contacts → |
“Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Chilternfortrea.comHQ: Durham, NC, United StatesReported employees: 10001+ | Durham, NC, United States | 10001+ | Exact match | 537 contacts → |
“THIS PAGE IS NOT MONITORED.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Avance Clinicalavancecro.comHQ: Adelaide, AustraliaReported employees: 201-500 | Adelaide, Australia | 201-500 | Exact match | 446 contacts → |
“Avance Clinical is a full-service Contract Research Organization (CRO) headquartered in Australia, with extensive operations across New Zealand, Asia, North America, and Europe.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  CALYXcalyx.aiHQ: Nottingham, United KingdomReported employees: 1,001-5,000 | Nottingham, United Kingdom | 1,001-5,000 | Exact match | 440 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Siterositero.comHQ: Coral Gables, FL, United StatesReported employees: 501-1,000 | Coral Gables, FL, United States | 501-1,000 | Exact match | 390 contacts → |
“Sitero is a next-generation, site-focused clinical research organization (CRO) for life sciences and institutional research organizations that helps get treatments to market safer…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  WEP Clinicalwepclinical.comHQ: London, NC, United KingdomReported employees: 501-1,000 | London, NC, United Kingdom | 501-1,000 | Exact match | 371 contacts → |
“At WEP Clinical, we operate as a specialist CRO with a proven track record of excellence in designing, managing, and executing Clinical Trials, Expanded Access Programs (EAPs)…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Medex SMOmedex-smo.comHQ: Istanbul, TürkiyeReported employees: 51-200 | Istanbul, Türkiye | 51-200 | Exact match | 344 contacts → |
“MEDEX is an organization that specializes in managing clinical research sites.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Tech Observertech-observer.comHQ: Paramus, NJ, United StatesReported employees: 501-1,000 | Paramus, NJ, United States | 501-1,000 | Exact match | 343 contacts → |
“Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,850 company matches
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Patient recruitment services: dataset insights
November 5, 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
1,846 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,850 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 5, 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 ↗
Patient recruitment services by location
9 lists · largest firstEvery Patient recruitment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Patient recruitment services based in the United States825
- Patient recruitment services based in India101
- Patient recruitment services based in the United Kingdom94
- Patient recruitment services based in Australia45
- Patient recruitment services based in Canada41
- Patient recruitment services based in Germany39
- Patient recruitment services based in Poland27
Cities
Questions about this company list
What does Exact match mean for patient recruitment 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 patient recruitment services did RevenueBase find worldwide?
The saved snapshot records 1,850 matching company records, 95,003 tracked contacts and 41,970 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 5, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 patient recruitment services worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/patient-recruitment-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 patient recruitment services worldwide
RevenueBase records 1,850 matching company records for patient recruitment services worldwide, with 95,003 tracked contacts and 41,970 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 5, 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 patient recruitment services worldwide
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 | 20,436 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 · November 5, 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 | 19,955 contacts → |
“PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PSI CROpsi-cro.com HQ: Zug, SwitzerlandReported employees: 1,001-5,000 | Zug, Switzerland | 1,001-5,000 | Exact match | 2,693 contacts → |
“PSI is a leading full-service global Contract Research Organization whose key strength is predictable patient enrollment across multiple therapeutic areas.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Novotechnovotech-cro.com HQ: Singapore, AustraliaReported employees: 1,001-5,000 | Singapore, Australia | 1,001-5,000 | Exact match | 1,965 contacts → |
“Novotech is a globally recognized full-service clinical research organization (CRO) and scientific advisory company that provides biotech and small- to mid-sized pharma companies…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Veeda Lifesciencesveedalifesciences.com HQ: Ahmedabad, IndiaReported employees: 501-1,000 | Ahmedabad, India | 501-1,000 | Exact match | 1,383 contacts → |
“We partner with innovator and generic companies using our high-quality infrastructure and a global network of clinical trial sites, to launch novel therapies and new products for…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Perceptive INCperceptive.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,269 contacts → |
“Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | CTI Clinical Trial And Consulting Servicesctifacts.com HQ: Covington, United StatesReported employees: 1,001-5,000 | Covington, United States | 1,001-5,000 | Exact match | 1,137 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cenexelcenexel.com HQ: Salt Lake City, UT, United StatesReported employees: 1,001-5,000 | Salt Lake City, UT, United States | 1,001-5,000 | Exact match | 894 contacts → |
“CenExel is a leading integrated, wholly owned, nationwide clinical research site network comprised of 18 Centers of Excellence in major metropolitan areas across the U.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MMGmmgct.com HQ: Rockville, MD, United StatesReported employees: Not recorded | Rockville, MD, United States | Not recorded | Exact match | 802 contacts → |
“MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | RHOrhoworld.com HQ: Durham, NC, United StatesReported employees: 501-1,000 | Durham, NC, United States | 501-1,000 | Exact match | 753 contacts → |
“Experience the Cohesion Effect.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Excelyaexcelya.com HQ: Boulogne-billancourt, FranceReported employees: 501-1,000 | Boulogne-billancourt, France | 501-1,000 | Exact match | 682 contacts → |
“Excelya is an independent partner that serves Biotech, Pharma, and Medical Device organizations with a comprehensive range of Full-service CRO, FSP, and Resourcing solutions…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Ergomedergomedcro.com HQ: Guildford, United KingdomReported employees: 1,001-5,000 | Guildford, United Kingdom | 1,001-5,000 | Exact match | 560 contacts → |
“Established in 1997, Ergomed is a global leader in delivering specialized services in oncology, rare disease, and complex trials to the pharmaceutical and biotech sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Axis Clinicals LTDaxisclinicals.com HQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 551 contacts → |
“AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Accelerated Enrollment Solutionstrialmed.com HQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 539 contacts → |
“Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Chilternfortrea.com HQ: Durham, NC, United StatesReported employees: 10001+ | Durham, NC, United States | 10001+ | Exact match | 537 contacts → |
“THIS PAGE IS NOT MONITORED.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Avance Clinicalavancecro.com HQ: Adelaide, AustraliaReported employees: 201-500 | Adelaide, Australia | 201-500 | Exact match | 446 contacts → |
“Avance Clinical is a full-service Contract Research Organization (CRO) headquartered in Australia, with extensive operations across New Zealand, Asia, North America, and Europe.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | CALYXcalyx.ai HQ: Nottingham, United KingdomReported employees: 1,001-5,000 | Nottingham, United Kingdom | 1,001-5,000 | Exact match | 440 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Siterositero.com HQ: Coral Gables, FL, United StatesReported employees: 501-1,000 | Coral Gables, FL, United States | 501-1,000 | Exact match | 390 contacts → |
“Sitero is a next-generation, site-focused clinical research organization (CRO) for life sciences and institutional research organizations that helps get treatments to market safer…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | WEP Clinicalwepclinical.com HQ: London, NC, United KingdomReported employees: 501-1,000 | London, NC, United Kingdom | 501-1,000 | Exact match | 371 contacts → |
“At WEP Clinical, we operate as a specialist CRO with a proven track record of excellence in designing, managing, and executing Clinical Trials, Expanded Access Programs (EAPs)…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Medex SMOmedex-smo.com HQ: Istanbul, TürkiyeReported employees: 51-200 | Istanbul, Türkiye | 51-200 | Exact match | 344 contacts → |
“MEDEX is an organization that specializes in managing clinical research sites.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tech Observertech-observer.com HQ: Paramus, NJ, United StatesReported employees: 501-1,000 | Paramus, NJ, United States | 501-1,000 | Exact match | 343 contacts → |
“Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,850 company matches
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Patient recruitment services: dataset insights
November 5, 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
1,846 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,850 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 5, 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 ↗
Patient recruitment services by location
9 lists · largest firstEvery Patient recruitment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Patient recruitment services based in the United States825
- Patient recruitment services based in India101
- Patient recruitment services based in the United Kingdom94
- Patient recruitment services based in Australia45
- Patient recruitment services based in Canada41
- Patient recruitment services based in Germany39
- Patient recruitment services based in Poland27
Cities
Questions about this company list
What does Exact match mean for patient recruitment 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 patient recruitment services did RevenueBase find worldwide?
The saved snapshot records 1,850 matching company records, 95,003 tracked contacts and 41,970 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 5, 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.
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Cite this list
RevenueBase Data Team. Top 25 patient recruitment services worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/patient-recruitment-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗