Company lists · Data refreshed October 2026

Top 25 Clinical trial communications agencies worldwide

Name: Clinical trial communications agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 4,344 companies tracked

RevenueBase identified 4,344 company matches for clinical trial communications agencies worldwide as of October 2026 and tracks 219,938 professional contacts across them, including 90,413 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for clinical trial communications agencies 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 October 9, 2026. Country and city lists for clinical trial communications agencies 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 Oct 9, 2026 How this list was built

4,344Companies

219,938Contacts tracked

90,413Verified emails

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The 25 largest clinical trial communications agencies worldwide

Ranked by team size

Top 25 of 4,344 company matches for clinical trial communications agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Parexel	Exact match	Raleigh, NC, United StatesHQ recorded Oct 9, 2026	10001+	19,864 contacts →
	Exact match “Parexel is a leading global clinical research organization (CRO) providing insights-driven Clinical and Consulting solutions to the world’s life sciences industry.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	PPD	Exact match	Wilmington, NC, United StatesHQ recorded Oct 9, 2026	10001+	19,757 contacts →
	Exact match “PPD is part of Thermo Fisher Scientific, the world leader in serving science.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Fortrea	Exact match	Research Triangle Park, NC, United StatesHQ recorded Oct 9, 2026	10001+	10,915 contacts →
	Exact match “Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Medpace	Exact match	Cincinnati, OH, United StatesHQ recorded Oct 9, 2026	5,001-10,000	6,234 contacts →
	Exact match “Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Covance	Exact match	Princeton, NJ, United StatesHQ recorded Oct 9, 2026	10001+	5,059 contacts →
	Exact match “As the drug development business of Laboratory Corporation of America Holdings (Labcorp) and the world’s most comprehensive drug development #CRO service company, we have helped…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Worldwide Clinical Trials	Exact match	Research Triangle Park, NC, United StatesHQ recorded Oct 9, 2026	1,001-5,000	3,794 contacts →
	Exact match “Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Medidata Solutions	Exact match	New York, NY, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,678 contacts →
	Exact match “Medidata is powering smarter treatments and healthier people through digital solutions to support clinical trials.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Premier Research	Exact match	Morrisville, NC, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,670 contacts →
	Exact match “Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	PSI CRO	Exact match	Zug, SwitzerlandHQ recorded Oct 9, 2026	1,001-5,000	2,622 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 · Oct 9, 2026 · View company records in RevenueBase
10	Propharma	Exact match	Raleigh, NC, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,144 contacts →
	Exact match “At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Signant Health	Exact match	Blue Bell, PA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,127 contacts →
	Exact match “For 25+ years, Signant Health has been pioneering solutions and methodologies that propel clinical research programs toward regulatory success.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Precision For Medicine	Exact match	Bethesda, MD, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,917 contacts →
	Exact match “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Novotech	Exact match	Singapore, AustraliaHQ recorded Oct 9, 2026	1,001-5,000	1,906 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 · Oct 9, 2026 · View company records in RevenueBase
14	Altasciences	Exact match	Laval, QC, CanadaHQ recorded Oct 9, 2026	1,001-5,000	1,781 contacts →
	Exact match “Outsourcing made easy with a one-stop solution to early-phase drug development.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Cliantha Research Limited	Exact match	Ahmedabad, IndiaHQ recorded Oct 9, 2026	1,001-5,000	1,615 contacts →
	Exact match “Cliantha Research, full-service clinical research organization (CRO), provides comprehensive and integrated offerings in Early Phase (BA/BE and Phase I) trials, Late Phase (Phase…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Advarra	Exact match	Columbia, MD, United StatesHQ recorded Oct 9, 2026	501-1,000	1,604 contacts →
	Exact match “Advarra provides the platform, insights, and expertise that make clinical trials more efficient and connected.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	CYTEL	Exact match	Cambridge, MA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,574 contacts →
	Exact match “Cytel is the world’s leading data-science CRO, driving advancements in human health through robust analytics and innovative clinical trial software.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Veeda Lifesciences	Exact match	Ahmedabad, IndiaHQ recorded Oct 9, 2026	501-1,000	1,319 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 · Oct 9, 2026 · View company records in RevenueBase
19	Suvoda	Exact match	Conshohocken, PA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,303 contacts →
	Exact match “Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	ERT	Exact match	Philadelphia, PA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,297 contacts →
	Exact match “ERT, the global clinical endpoint technology leader, and Bioclinica, a technological and scientific leader in medical imaging, is now the combined company of Clario.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Lambda Therapeutic Research	Exact match	Ahmedabad, IndiaHQ recorded Oct 9, 2026	1,001-5,000	1,272 contacts →
	Exact match “Lambda Therapeutic Research is a leading full-service Global Clinical Research Organization (CRO) headquartered in Ahmedabad (India), with facilities and operations in Mehsana…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Perceptive INC	Exact match	London, United KingdomHQ recorded Oct 9, 2026	1,001-5,000	1,238 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 · Oct 9, 2026 · View company records in RevenueBase
23	WCG	Exact match	Cary, NC, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,179 contacts →
	Exact match “WCG is a true partner to research sponsors, CROs, sites and participants in navigating the clinical research journey.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Celerion	Exact match	Lincoln, NE, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,151 contacts →
	Exact match “Celerion, a leader in early clinical research, delivers Applied Translational Medicine.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	CTI Clinical Trial And Consulting Services	Exact match	Covington, KY, United StatesHQ recorded Oct 9, 2026	1,001-5,000	1,102 contacts →
	Exact match “CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Recorded in the RevenueBase company graph · Oct 9, 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 “clinical trial communications agencies”. 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 4,344 clinical trial communications agencies worldwide

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Clinical trial communications agencies worldwide at a glance

As of Oct 9, 2026

41.1%Verified-email coverage

50.6Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · London

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

1,719

11-50

1,552

51-200

685

201-500

195

501-1,000

1,001-5,000

5,001-10,000

10001+

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 clinical trial communications agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “clinical trial communications agencies” 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 90,413 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 9, 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.

Clinical trial communications agencies by location

34 lists · largest first

Every Clinical trial communications agencies 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 “clinical trial communications agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clinical trial communications agencies are there worldwide?

RevenueBase identified 4,344 company matches for clinical trial communications agencies worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

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

Which country has the most clinical trial communications agencies?

The United States leads with 1,633 companies, followed by India (345) and the United Kingdom (324). Every clinical trial communications agencies list by country and city is linked on this page.

Which city has the most clinical trial communications agencies?

London leads with 116 company records, followed by New York (82) and Hyderabad (46).

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 90,413 professional contacts with verified work emails tracked across these 4,344 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 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.