Company lists · Data refreshed November 2026

Top 25 Phase 1 clinical trial services worldwide

RevenueBase identified 1,260 company matches for phase 1 clinical trial services worldwide as of November 2026 and tracks 73,593 professional contacts across them, including 31,201 with verified work emails. The United States is the largest market and Miami the largest hub.

This list covers company matches for phase 1 clinical trial 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 6, 2026. Country and city lists for phase 1 clinical trial 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,260Companies
73,593Contacts tracked
31,201Verified emails
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The 25 largest phase 1 clinical trial services worldwide

Ranked by team size
Top 25 of 1,260 company matches for phase 1 clinical trial services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWilmington, NC, United StatesHQ recorded Nov 6, 202610001+19,955 contacts →

Exact match

“PPD is part of Thermo Fisher Scientific, the world leader in serving science.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchResearch Triangle Park, NC, United StatesHQ recorded Nov 6, 202610001+11,174 contacts →

Exact match

“Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20265,001-10,0006,387 contacts →

Exact match

“Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLaval, QC, CanadaHQ recorded Nov 6, 20261,001-5,0001,824 contacts →

Exact match

“Outsourcing made easy with a one-stop solution to early-phase drug development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAhmedabad, IndiaHQ recorded Nov 6, 2026501-1,0001,383 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 6, 2026 · View company records in RevenueBase
6Exact matchLincoln, United StatesHQ recorded Nov 6, 20261,001-5,0001,172 contacts →

Exact match

“Celerion, a leader in early clinical research, delivers Applied Translational Medicine.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKraków, PolandHQ recorded Nov 6, 20261,001-5,000702 contacts →

Exact match

“Selvita is one of the largest preclinical contract research organizations in Europe, driven by a clear mission: to offer a comprehensive scope of services bridging the gap between…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 2026201-500599 contacts →

Exact match

“Pharma Medica Research is a full service early phase contract research organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMelbourne, AustraliaHQ recorded Nov 6, 2026501-1,000598 contacts →

Exact match

“Nucleus Network is the only global provider dedicated to early phase clinical trials, with units in Australia, the USA and the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGuildford, United KingdomHQ recorded Nov 6, 20261,001-5,000560 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 6, 2026 · View company records in RevenueBase
11Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500551 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 6, 2026 · View company records in RevenueBase
12Exact matchMattawan, MI, United StatesHQ recorded Nov 6, 20261,001-5,000545 contacts →

Exact match

“MPI Research provides preclinical services to agricultural, environmental, biopharmaceutical, medical device, animal health, and chemical industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHorsham, PA, United StatesHQ recorded Nov 6, 20261,001-5,000539 contacts →

Exact match

“Accelerated Enrollment Solutions (AES) is now Trialmed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAdelaide, AustraliaHQ recorded Nov 6, 2026201-500446 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 6, 2026 · View company records in RevenueBase
15Exact matchLeiden, NetherlandsHQ recorded Nov 6, 2026201-500370 contacts →

Exact match

“The CRO for data-intensive, early phase clinical studies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchApex, FL, United StatesHQ recorded Nov 6, 2026501-1,000357 contacts →

Exact match

“Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBlackpool, United KingdomHQ recorded Nov 6, 2026201-500333 contacts →

Exact match

“MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMerthyr Tydfil, United KingdomHQ recorded Nov 6, 2026201-500312 contacts →

Exact match

“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSan Antonio, United StatesHQ recorded Nov 6, 2026501-1,000304 contacts →

Exact match

“Deeply rooted in community oncology centers globally, the START Center for Cancer Research ("START") provides patients with access to specialized Phase 1 clinical trials for novel…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchOsaka, CA, JapanHQ recorded Nov 6, 2026501-1,000301 contacts →

Exact match

“Linical is a global Contract Research Organization (CRO) for full-service drug development, with a proven record of helping biopharmaceutical companies successfully navigate the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchEurope And North America, FranceHQ recorded Nov 6, 2026201-500292 contacts →

Exact match

“As Global Provider in Early Development, we offer Non-Clinical, Clinical and Bioanalytical solutions for both pharmaceutical and biotech companies and we tailor our high-quality…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMorrisville, NC, United StatesHQ recorded Nov 6, 2026201-500291 contacts →

Exact match

“Science 37 is a modern clinical research site that delivers trials directly to patients’ homes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchUnited StatesHQ recorded Nov 6, 2026501-1,000286 contacts →

Exact match

“Accellacare delivers clinical trial services to pharmaceutical, biotechnology, medical device industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchZagreb, CroatiaHQ recorded Nov 6, 2026201-500268 contacts →

Exact match

“Optimapharm is a mid-sized, global Contract Research Organisation turning science into hope through agile, patient-focused clinical development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchChennai, IndiaHQ recorded Nov 6, 2026201-500266 contacts →

Exact match

“Azidus is a full service clinical research organization catering to the technical needs of pharmaceutical and biotechnology industries for the conduct of BA/BE studies, Clinical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,260 phase 1 clinical trial services worldwide

See the full list, filter by size, metro and specialty, and access 31,201 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Phase 1 clinical trial services worldwide at a glance

As of Nov 6, 2026
42.4%Verified-email coverage
58.4Average contacts per company
11-50Median size (employees)
2.3%Largest-city concentration · Miami
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
477
11-50
482
51-200
209
201-500
48
501-1,000
20
1,001-5,000
12
5,001-10,000
2
10001+
7

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 phase 1 clinical trial services are linked below.
What qualifies
Company records worldwide whose business descriptions match “phase 1 clinical trial services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. 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 31,201 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Phase 1 clinical trial services by location

8 lists · largest first

Every Phase 1 clinical trial services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “phase 1 clinical trial services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many phase 1 clinical trial services are there worldwide?

RevenueBase identified 1,260 company matches for phase 1 clinical trial 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?

PPD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most phase 1 clinical trial services?

The United States leads with 554 companies, followed by India (88) and the United Kingdom (49). Every phase 1 clinical trial services list by country and city is linked on this page.

Which city has the most phase 1 clinical trial services?

Miami leads with 29 company records, followed by London (18) and Hyderabad (14).

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 31,201 professional contacts with verified work emails tracked across these 1,260 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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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.