Company lists · Data refreshed September 2026
Top 25 Healthy volunteer recruitment firms worldwide
RevenueBase identified 3,336 company matches for healthy volunteer recruitment firms worldwide as of September 2026 and tracks 71,759 professional contacts across them, including 23,537 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for healthy volunteer recruitment firms 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 September 28, 2026. Country and city lists for healthy volunteer recruitment firms 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 healthy volunteer recruitment firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,530 contacts → | ||||
Exact match “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 2,494 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 1,778 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 1,538 contacts → | ||||
Exact match “In recruiting, stating actual facts has become: Foreign | Uncommon | Taboo.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 971 contacts → | ||||
Exact match “Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 847 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 770 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 590 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 561 contacts → | ||||
Exact match “Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 535 contacts → | ||||
Exact match “AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 528 contacts → | ||||
Exact match “While the availability of medical technicians and professionals becomes increasingly limited, there seems to be no shortage of staffing firms.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 521 contacts → | ||||
Exact match “Your Nursing Agency (YNA) is a leading healthcare recruitment agency providing experienced staff to hospitals, health facilities, aged care facilities and community care clients.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 481 contacts → | ||||
Exact match “HealthCare Support is a national niche recruitment firm that has a singular focus - placing top talent in the dynamic healthcare industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 458 contacts → | ||||
Exact match “Avant Healthcare Professionals is a leader in international healthcare recruitment and staffing, connecting globally educated nurses and allied health professionals with hospitals…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 340 contacts → | ||||
Exact match “We at Cpl Healthcare are proud to be the largest healthcare recruitment agency in Ireland and boast a highly recognisable brand in both domestic and international markets.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 334 contacts → | ||||
Exact match “Talent4Health is the most candidate-centric agency in the industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 321 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 321 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 312 contacts → | ||||
Exact match “Pratia Research Site Network, owns and commands a network of over 100 clinical research sites, establishing strong presence across 9 countries globally.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 308 contacts → | ||||
Exact match “MEDEX is an organization that specializes in managing clinical research sites.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 267 contacts → | ||||
Exact match “We recruit for Nursing and Care roles across the UK.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 264 contacts → | ||||
Exact match “Accellacare delivers clinical trial services to pharmaceutical, biotechnology, medical device industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 260 contacts → | ||||
Exact match “PCM Trials acquired EmVenio Research and Netherlands-based Clinical Trials Service in 2024.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 254 contacts → | ||||
Exact match “Elligo Health Research is an integrated research organization founded to bridge the gap between cutting-edge clinical trials and the patients who need them-an idea that sparked…” Recorded in the RevenueBase company graph · Sep 28, 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 “healthy volunteer recruitment firms”. 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 3,336 healthy volunteer recruitment firms worldwide
See the full list, filter by size, metro and specialty, and access 23,537 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Healthy volunteer recruitment firms worldwide at a glance
As of Sep 28, 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 healthy volunteer recruitment firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “healthy volunteer recruitment firms” 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 23,537 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 September 28, 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.
Healthy volunteer recruitment firms by location
18 lists · largest firstEvery Healthy volunteer recruitment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Healthy volunteer recruitment firms based in the United States1,222
- Healthy volunteer recruitment firms based in the United Kingdom578
- Healthy volunteer recruitment firms based in Australia136
- Healthy volunteer recruitment firms based in Germany136
- Healthy volunteer recruitment firms based in India111
- Healthy volunteer recruitment firms based in France93
- Healthy volunteer recruitment firms based in Canada58
- Healthy volunteer recruitment firms based in the Netherlands48
- Healthy volunteer recruitment firms based in Ireland37
- Healthy volunteer recruitment firms based in Switzerland34
- Healthy volunteer recruitment firms based in South Africa29
Cities
- Healthy volunteer recruitment firms based in London, United Kingdom167
- Healthy volunteer recruitment firms based in Miami, United States41
- Healthy volunteer recruitment firms based in Sydney, Australia38
- Healthy volunteer recruitment firms based in Paris, France32
- Healthy volunteer recruitment firms based in Houston, United States30
- Healthy volunteer recruitment firms based in New York, United States30
- Healthy volunteer recruitment firms based in Atlanta, United States29
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 “healthy volunteer recruitment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many healthy volunteer recruitment firms are there worldwide?
RevenueBase identified 3,336 company matches for healthy volunteer recruitment firms worldwide as of September 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 country has the most healthy volunteer recruitment firms?
The United States leads with 1,222 companies, followed by the United Kingdom (578) and Australia (136). Every healthy volunteer recruitment firms list by country and city is linked on this page.
Which city has the most healthy volunteer recruitment firms?
London leads with 170 company records, followed by Miami (41) and Sydney (38).
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 23,537 professional contacts with verified work emails tracked across these 3,336 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 September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,336 healthy volunteer recruitment firms 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 healthy volunteer recruitment firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,336 matching company records for healthy volunteer recruitment firms worldwide, with 71,759 tracked contacts and 23,537 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: September 28, 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 healthy volunteer recruitment firms 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 |  PPDppd.comHQ: Waltham, MA, United StatesReported employees: 10001+ | Waltham, MA, United States | 10001+ | Exact match | 20,530 contacts → |
“The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  PSI CROpsi-cro.comHQ: Zug, SwitzerlandReported employees: 1,001-5,000 | Zug, Switzerland | 1,001-5,000 | Exact match | 2,494 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Novotechnovotech-cro.comHQ: Singapore, AustraliaReported employees: 1,001-5,000 | Singapore, Australia | 1,001-5,000 | Exact match | 1,778 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Triage Staffing Healthcare Staffingtriagestaff.comHQ: Omaha, NE, United StatesReported employees: Not recorded | Omaha, NE, United States | Not recorded | Exact match | 1,538 contacts → |
“In recruiting, stating actual facts has become: Foreign | Uncommon | Taboo.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Velocity Clinical Research, INCvelocityclinical.comHQ: Durham, NC, United StatesReported employees: 1,001-5,000 | Durham, NC, United States | 1,001-5,000 | Exact match | 971 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 | 847 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  MMGmmgct.comHQ: Rockville, MD, United StatesReported employees: Not recorded | Rockville, MD, United States | Not recorded | Exact match | 770 contacts → |
“MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  DM Clinical Researchdmclinical.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 590 contacts → |
“DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Accelerated Enrollment Solutionstrialmed.comHQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 561 contacts → |
“Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Axis Clinicals LTDaxisclinicals.comHQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 535 contacts → |
“AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Titan Medical Group, LLCtitanmed.comHQ: Omaha, NE, United StatesReported employees: 201-500 | Omaha, NE, United States | 201-500 | Exact match | 528 contacts → |
“While the availability of medical technicians and professionals becomes increasingly limited, there seems to be no shortage of staffing firms.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  YNA Your Nursing Agencyyna.com.auHQ: Adelaide, AustraliaReported employees: 1,001-5,000 | Adelaide, Australia | 1,001-5,000 | Exact match | 521 contacts → |
“Your Nursing Agency (YNA) is a leading healthcare recruitment agency providing experienced staff to hospitals, health facilities, aged care facilities and community care clients.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Healthcare Supporthealthcaresupport.comHQ: Maitland, FL, United StatesReported employees: 51-200 | Maitland, FL, United States | 51-200 | Exact match | 481 contacts → |
“HealthCare Support is a national niche recruitment firm that has a singular focus - placing top talent in the dynamic healthcare industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Avant Healthcare Professionalsavanthealthcare.com HQ: Maitland, FL, United StatesReported employees: 501-1,000 | Maitland, FL, United States | 501-1,000 | Exact match | 458 contacts → |
“Avant Healthcare Professionals is a leader in international healthcare recruitment and staffing, connecting globally educated nurses and allied health professionals with hospitals…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  CPL Healthcarecplhealthcare.comHQ: Dublin 4, IrelandReported employees: 51-200 | Dublin 4, Ireland | 51-200 | Exact match | 340 contacts → |
“We at Cpl Healthcare are proud to be the largest healthcare recruitment agency in Ireland and boast a highly recognisable brand in both domestic and international markets.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Talent4healthtalent4health.comHQ: Jersey City, NJ, United StatesReported employees: 201-500 | Jersey City, NJ, United States | 201-500 | Exact match | 334 contacts → |
“Talent4Health is the most candidate-centric agency in the industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  WEP Clinicalwepclinical.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 321 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Flourish Researchflourishresearch.comHQ: Apex, NC, United StatesReported employees: 501-1,000 | Apex, NC, United States | 501-1,000 | Exact match | 321 contacts → |
“Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Pratiapratia.comHQ: Warszawa, PolandReported employees: 201-500 | Warszawa, Poland | 201-500 | Exact match | 312 contacts → |
“Pratia Research Site Network, owns and commands a network of over 100 clinical research sites, establishing strong presence across 9 countries globally.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Medex SMOmedex-smo.comHQ: Istanbul, TürkiyeReported employees: 51-200 | Istanbul, Türkiye | 51-200 | Exact match | 308 contacts → |
“MEDEX is an organization that specializes in managing clinical research sites.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Onecall24 Limitedonecall24.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 267 contacts → |
“We recruit for Nursing and Care roles across the UK.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Accellacareaccellacare.com HQ: United StatesReported employees: 501-1,000 | United States | 501-1,000 | Exact match | 264 contacts → |
“Accellacare delivers clinical trial services to pharmaceutical, biotechnology, medical device industries.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  PCM Trialspcmtrials.comHQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 260 contacts → |
“PCM Trials acquired EmVenio Research and Netherlands-based Clinical Trials Service in 2024.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Elligo Health Researchelligo.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 254 contacts → |
“Elligo Health Research is an integrated research organization founded to bridge the gap between cutting-edge clinical trials and the patients who need them-an idea that sparked…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,336 company matches
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Healthy volunteer recruitment firms: dataset insights
September 28, 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
3,326 records in the displayed employee bands.
10 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 3,336 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: September 28, 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 ↗
Healthy volunteer recruitment firms by location
18 lists · largest firstEvery Healthy volunteer recruitment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Healthy volunteer recruitment firms based in the United States1,222
- Healthy volunteer recruitment firms based in the United Kingdom578
- Healthy volunteer recruitment firms based in Australia136
- Healthy volunteer recruitment firms based in Germany136
- Healthy volunteer recruitment firms based in India111
- Healthy volunteer recruitment firms based in France93
- Healthy volunteer recruitment firms based in Canada58
- Healthy volunteer recruitment firms based in the Netherlands48
- Healthy volunteer recruitment firms based in Ireland37
- Healthy volunteer recruitment firms based in Switzerland34
- Healthy volunteer recruitment firms based in South Africa29
Cities
- Healthy volunteer recruitment firms based in London, United Kingdom167
- Healthy volunteer recruitment firms based in Miami, United States41
- Healthy volunteer recruitment firms based in Sydney, Australia38
- Healthy volunteer recruitment firms based in Paris, France32
- Healthy volunteer recruitment firms based in Houston, United States30
- Healthy volunteer recruitment firms based in New York, United States30
- Healthy volunteer recruitment firms based in Atlanta, United States29
Questions about this company list
What does Exact match mean for healthy volunteer recruitment firms?
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 healthy volunteer recruitment firms did RevenueBase find worldwide?
The saved snapshot records 3,336 matching company records, 71,759 tracked contacts and 23,537 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: September 28, 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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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 healthy volunteer recruitment firms worldwide. Snapshot: September 28, 2026. https://revenuebase.ai/companies/browse/healthy-volunteer-recruitment-firms.
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 healthy volunteer recruitment firms worldwide
RevenueBase records 3,336 matching company records for healthy volunteer recruitment firms worldwide, with 71,759 tracked contacts and 23,537 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: September 28, 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 healthy volunteer recruitment firms 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 | PPDppd.com HQ: Waltham, MA, United StatesReported employees: 10001+ | Waltham, MA, United States | 10001+ | Exact match | 20,530 contacts → |
“The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | PSI CROpsi-cro.com HQ: Zug, SwitzerlandReported employees: 1,001-5,000 | Zug, Switzerland | 1,001-5,000 | Exact match | 2,494 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Novotechnovotech-cro.com HQ: Singapore, AustraliaReported employees: 1,001-5,000 | Singapore, Australia | 1,001-5,000 | Exact match | 1,778 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Triage Staffing Healthcare Staffingtriagestaff.com HQ: Omaha, NE, United StatesReported employees: Not recorded | Omaha, NE, United States | Not recorded | Exact match | 1,538 contacts → |
“In recruiting, stating actual facts has become: Foreign | Uncommon | Taboo.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Velocity Clinical Research, INCvelocityclinical.com HQ: Durham, NC, United StatesReported employees: 1,001-5,000 | Durham, NC, United States | 1,001-5,000 | Exact match | 971 contacts → |
“Velocity is the world’s leading organization of fully integrated clinical research sites.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 | 847 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | MMGmmgct.com HQ: Rockville, MD, United StatesReported employees: Not recorded | Rockville, MD, United States | Not recorded | Exact match | 770 contacts → |
“MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DM Clinical Researchdmclinical.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 590 contacts → |
“DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Accelerated Enrollment Solutionstrialmed.com HQ: Horsham, PA, United StatesReported employees: 1,001-5,000 | Horsham, PA, United States | 1,001-5,000 | Exact match | 561 contacts → |
“Accelerated Enrollment Solutions (AES) is now Trialmed.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Axis Clinicals LTDaxisclinicals.com HQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 535 contacts → |
“AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Titan Medical Group, LLCtitanmed.com HQ: Omaha, NE, United StatesReported employees: 201-500 | Omaha, NE, United States | 201-500 | Exact match | 528 contacts → |
“While the availability of medical technicians and professionals becomes increasingly limited, there seems to be no shortage of staffing firms.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | YNA Your Nursing Agencyyna.com.au HQ: Adelaide, AustraliaReported employees: 1,001-5,000 | Adelaide, Australia | 1,001-5,000 | Exact match | 521 contacts → |
“Your Nursing Agency (YNA) is a leading healthcare recruitment agency providing experienced staff to hospitals, health facilities, aged care facilities and community care clients.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Healthcare Supporthealthcaresupport.com HQ: Maitland, FL, United StatesReported employees: 51-200 | Maitland, FL, United States | 51-200 | Exact match | 481 contacts → |
“HealthCare Support is a national niche recruitment firm that has a singular focus - placing top talent in the dynamic healthcare industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Avant Healthcare Professionalsavanthealthcare.com HQ: Maitland, FL, United StatesReported employees: 501-1,000 | Maitland, FL, United States | 501-1,000 | Exact match | 458 contacts → |
“Avant Healthcare Professionals is a leader in international healthcare recruitment and staffing, connecting globally educated nurses and allied health professionals with hospitals…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | CPL Healthcarecplhealthcare.com HQ: Dublin 4, IrelandReported employees: 51-200 | Dublin 4, Ireland | 51-200 | Exact match | 340 contacts → |
“We at Cpl Healthcare are proud to be the largest healthcare recruitment agency in Ireland and boast a highly recognisable brand in both domestic and international markets.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Talent4healthtalent4health.com HQ: Jersey City, NJ, United StatesReported employees: 201-500 | Jersey City, NJ, United States | 201-500 | Exact match | 334 contacts → |
“Talent4Health is the most candidate-centric agency in the industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | WEP Clinicalwepclinical.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 321 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Flourish Researchflourishresearch.com HQ: Apex, NC, United StatesReported employees: 501-1,000 | Apex, NC, United States | 501-1,000 | Exact match | 321 contacts → |
“Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Pratiapratia.com HQ: Warszawa, PolandReported employees: 201-500 | Warszawa, Poland | 201-500 | Exact match | 312 contacts → |
“Pratia Research Site Network, owns and commands a network of over 100 clinical research sites, establishing strong presence across 9 countries globally.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Medex SMOmedex-smo.com HQ: Istanbul, TürkiyeReported employees: 51-200 | Istanbul, Türkiye | 51-200 | Exact match | 308 contacts → |
“MEDEX is an organization that specializes in managing clinical research sites.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Onecall24 Limitedonecall24.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 267 contacts → |
“We recruit for Nursing and Care roles across the UK.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Accellacareaccellacare.com HQ: United StatesReported employees: 501-1,000 | United States | 501-1,000 | Exact match | 264 contacts → |
“Accellacare delivers clinical trial services to pharmaceutical, biotechnology, medical device industries.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | PCM Trialspcmtrials.com HQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 260 contacts → |
“PCM Trials acquired EmVenio Research and Netherlands-based Clinical Trials Service in 2024.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Elligo Health Researchelligo.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 254 contacts → |
“Elligo Health Research is an integrated research organization founded to bridge the gap between cutting-edge clinical trials and the patients who need them-an idea that sparked…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Healthy volunteer recruitment firms: dataset insights
September 28, 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
3,326 records in the displayed employee bands.
10 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 3,336 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: September 28, 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 ↗
Healthy volunteer recruitment firms by location
18 lists · largest firstEvery Healthy volunteer recruitment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Healthy volunteer recruitment firms based in the United States1,222
- Healthy volunteer recruitment firms based in the United Kingdom578
- Healthy volunteer recruitment firms based in Australia136
- Healthy volunteer recruitment firms based in Germany136
- Healthy volunteer recruitment firms based in India111
- Healthy volunteer recruitment firms based in France93
- Healthy volunteer recruitment firms based in Canada58
- Healthy volunteer recruitment firms based in the Netherlands48
- Healthy volunteer recruitment firms based in Ireland37
- Healthy volunteer recruitment firms based in Switzerland34
- Healthy volunteer recruitment firms based in South Africa29
Cities
- Healthy volunteer recruitment firms based in London, United Kingdom167
- Healthy volunteer recruitment firms based in Miami, United States41
- Healthy volunteer recruitment firms based in Sydney, Australia38
- Healthy volunteer recruitment firms based in Paris, France32
- Healthy volunteer recruitment firms based in Houston, United States30
- Healthy volunteer recruitment firms based in New York, United States30
- Healthy volunteer recruitment firms based in Atlanta, United States29
Questions about this company list
What does Exact match mean for healthy volunteer recruitment firms?
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 healthy volunteer recruitment firms did RevenueBase find worldwide?
The saved snapshot records 3,336 matching company records, 71,759 tracked contacts and 23,537 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: September 28, 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
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Cite this list
RevenueBase Data Team. Top 25 healthy volunteer recruitment firms worldwide. Snapshot: September 28, 2026. https://revenuebase.ai/companies/browse/healthy-volunteer-recruitment-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗