Company lists · Data refreshed September 2026

Top 25 Clinical trial manufacturers based in the United States

Name: Clinical trial manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 989 companies tracked

RevenueBase identified 989 clinical trial manufacturers headquartered in the United States as of September 2026 and tracks 194,289 professional contacts across them, including 88,285 with verified work emails. San Diego is the largest hub.

This list covers clinical trial manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

989Companies

194,289Contacts tracked

88,285Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest clinical trial manufacturers based in the United States

Ranked by team size

Top 25 of 989 clinical trial manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clinical trial manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thermo Fisher Scientific	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	70,907 contacts →
	Indirect evidence “About Thermo Fisher Scientific Thermo Fisher Scientific Inc.” Source: RevenueBase Database · checked Sep 16, 2026
2	PPD	Partial evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	20,530 contacts →
	Partial evidence “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Source: RevenueBase Database · checked Sep 16, 2026
3	Fortrea	Partial evidence	Research Triangle Park, NC, United StatesHQ checked Sep 16, 2026	10001+	10,632 contacts →
	Partial evidence “Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Source: RevenueBase Database · checked Sep 16, 2026
4	Bio-Rad Laboratories	Indirect evidence	Hercules, CA, United StatesHQ checked Sep 16, 2026	5,001-10,000	8,149 contacts →
	Indirect evidence “Bio-Rad provides the healthcare industry with innovative and useful products that help life science researchers accelerate the discovery process and medical diagnostic labs obtain…” Source: RevenueBase Database · checked Sep 16, 2026
5	Medpace	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 16, 2026	5,001-10,000	5,960 contacts →
	Partial evidence “Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Source: RevenueBase Database · checked Sep 16, 2026
6	Eversana	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	5,001-10,000	3,149 contacts →
	Indirect evidence “EVERSANA® is a leading independent provider of global services to the life sciences industry.” Source: RevenueBase Database · checked Sep 16, 2026
7	Premier Research	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,584 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
8	Propharma	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,079 contacts →
	Indirect evidence “At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Source: RevenueBase Database · checked Sep 16, 2026
9	Patheon	Strong evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	2,004 contacts →
	Strong evidence “Thermo Fisher Scientific provides industry-leading pharma services for drug development, clinical trial logistics, and commercial manufacturing through our Patheon™ brand.” Source: RevenueBase Database · checked Sep 16, 2026
10	Precision For Medicine	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,781 contacts →
	Partial evidence “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Source: RevenueBase Database · checked Sep 16, 2026
11	KBI Biopharma	Indirect evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,645 contacts →
	Indirect evidence “KBI Biopharma is an award-winning biopharmaceutical contract services organization providing fully-integrated, accelerated drug development and biomanufacturing services to…” Source: RevenueBase Database · checked Sep 16, 2026
12	Syneos Health Clinical Solutions	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 16, 2026	10001+	1,569 contacts →
	Indirect evidence “Syneos Health® is a leading fully integrated biopharmaceutical solutions organization built to accelerate customer success.” Source: RevenueBase Database · checked Sep 16, 2026
13	Clinchoice	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,516 contacts →
	Indirect evidence “ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
14	NAMSA	Indirect evidence	Toledo, OH, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,275 contacts →
	Indirect evidence “Helping medical device Sponsors improve healthcare since 1967, NAMSA is the world’s leading MedTech Contract Research Organization (CRO) offering global end-to-end development…” Source: RevenueBase Database · checked Sep 16, 2026
15	Genscript	Indirect evidence	Piscataway, NJ, United StatesHQ checked Sep 16, 2026	5,001-10,000	1,194 contacts →
	Indirect evidence “GenScript Life Science Group is a part of GenScript Biotech Corporation.” Source: RevenueBase Database · checked Sep 16, 2026
16	CTI Clinical Trial And Consulting Services	Strong evidence	Covington, KY, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,043 contacts →
	Strong evidence “CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Source: RevenueBase Database · checked Sep 16, 2026
17	Inotiv	Indirect evidence	West Lafayette, IN, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,015 contacts →
	Indirect evidence “WHERE INSIGHTS LEAD TO ANSWERS Expect More In choosing a partner for discovery, development and research models, expect more: more attention, more insight, and a superlative…” Source: RevenueBase Database · checked Sep 16, 2026
18	Navitas Life Sciences	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	990 contacts →
	Partial evidence “Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.” Source: RevenueBase Database · checked Sep 16, 2026
19	Velocity Clinical Research, INC	Partial evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	971 contacts →
	Partial evidence “Velocity is the world’s leading organization of fully integrated clinical research sites.” Source: RevenueBase Database · checked Sep 16, 2026
20	EMMES	Strong evidence	Rockville, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	961 contacts →
	Strong evidence “Emmes is a Contract Research Organization delivering complex clinical trials through therapeutic expertise, scientific rigor, and technology-enabled execution.” Source: RevenueBase Database · checked Sep 16, 2026
21	Bioagilytix	Indirect evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	915 contacts →
	Indirect evidence “BioAgilytix is a leading global contract research organization focused on supporting pharmaceutical and biotech partners in all phases of drug development.” Source: RevenueBase Database · checked Sep 16, 2026
22	Cencora Pharma Solutions	Indirect evidence	Conshohocken, PA, United StatesHQ checked Sep 16, 2026	10001+	771 contacts →
	Indirect evidence “At Cencora, we are investing and innovating alongside our pharma customers to unlock their product’s potential.” Source: RevenueBase Database · checked Sep 16, 2026
23	Caidya	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	758 contacts →
	Partial evidence “Caidya is a multi-therapeutic clinical research organization (CRO) serving innovators worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
24	RHO	Indirect evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	501-1,000	732 contacts →
	Indirect evidence “Experience the Cohesion Effect.” Source: RevenueBase Database · checked Sep 16, 2026
25	Cirtec Medical	Partial evidence	Brooklyn Park, MN, United StatesHQ checked Sep 16, 2026	1,001-5,000	729 contacts →
	Partial evidence “Whether you’re a startup or a leading Class II or medical device manufacturer, Cirtec is here to help bring life-enhancing therapies to market – quickly and cost-effectively.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: clinical trial manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names clinical trial manufacturers.
Partial evidence: Its own public description names part of clinical trial manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical trial manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 989 clinical trial manufacturers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 88,285 reachable decision-makers.

Free signup · no credit card

View the full list →

Clinical trial manufacturers based in the United States at a glance

As of Sep 16, 2026

45.4%Verified-email coverage

196.4Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · San Diego

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

352

11-50

346

51-200

148

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 989 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among clinical trial manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “clinical trial manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names clinical trial manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among clinical trial manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 88,285 across the full list. 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 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Clinical trial manufacturers by metro

Clinical trial manufacturers in San Diego26
Clinical trial manufacturers in Miami25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names clinical trial manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many clinical trial manufacturers are there based in the United States?

RevenueBase identified 989 clinical trial manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Thermo Fisher Scientific, headquartered in Waltham, tops this list with the largest team on record.

Which city has the most clinical trial manufacturers?

San Diego leads with 26 headquartered companies, followed by Miami (25) and Boston (22).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 88,285 verified decision-maker contacts tracked across these 989 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 989 clinical trial manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Clinical trial manufacturers by geography

Browse the directory

Browse: Companies home · All United States lists · All Clinical trial manufacturers lists · New lists

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 Smart Search, 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.