Company lists · Data refreshed September 2026

Top 25 Phase 1 clinical trial providers based in the United States

RevenueBase identified 499 company matches for phase 1 clinical trial providers associated with the United States as of September 2026 and tracks 37,261 professional contacts across them, including 16,639 with verified work emails. Miami is the largest hub.

This list covers company matches for phase 1 clinical trial providers associated with the United States, 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 17, 2026.

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 Sep 17, 2026 How this list was built
499Companies
37,261Contacts tracked
16,639Verified emails
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The 25 largest phase 1 clinical trial providers based in the United States

Ranked by team size
Top 25 of 499 company matches for phase 1 clinical trial providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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 matchWaltham, MA, United StatesHQ recorded Sep 17, 202610001+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 17, 2026 · View company records in RevenueBase
2Exact matchMorrisville, NC, United StatesHQ recorded Sep 17, 20261,001-5,0002,584 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 · Sep 17, 2026 · View company records in RevenueBase
3Exact matchConshohocken, PA, United StatesHQ recorded Sep 17, 20261,001-5,0001,255 contacts →

Exact match

“Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchLincoln, NE, United StatesHQ recorded Sep 17, 20261,001-5,0001,080 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5Exact matchCanton, MI, United StatesHQ recorded Sep 17, 2026501-1,000876 contacts →

Exact match

“MMS Holdings (MMS) is an award-winning, data-focused clinical research organization (CRO) that supports the pharmaceutical and biotech industries with a proven, scientific…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 17, 2026501-1,000590 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 17, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 17, 2026501-1,000561 contacts →

Exact match

“Pharm-Olam is now Allucent.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8Exact matchDurham, NC, United StatesHQ recorded Sep 17, 202610001+532 contacts →

Exact match

“THIS PAGE IS NOT MONITORED.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact matchLas Vegas, NV, United StatesHQ recorded Sep 17, 202651-200238 contacts →

Exact match

“Novum is a Contract Research Organization (CRO) that provides research services to the worldwide pharmaceutical industry.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10Exact matchSan Jose, CA, United StatesHQ recorded Sep 17, 2026201-500229 contacts →

Exact match

“Since 2005, KlinEra has partnered with some of the largest pharmaceutical, biotech and device companies, providing innovative and customized clinical trial and research services.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11Exact matchMaitland, FL, United StatesHQ recorded Sep 17, 2026201-500226 contacts →

Exact match

“Welcome to K2 Medical Research, a privately-owned clinical research facility with multiple locations in Florida, Tennessee, and Rhode Island.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12Exact matchAventura, FL, United StatesHQ recorded Sep 17, 2026201-500225 contacts →

Exact match

“Biorasi is a global clinical research organization (CRO) that delivers speed-to-market strategies for small to midsized biotech and biopharma sponsors.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13Exact matchSan Antonio, TX, United StatesHQ recorded Sep 17, 2026501-1,000208 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 · Sep 17, 2026 · View company records in RevenueBase
14Exact matchMalvern, PA, United StatesHQ recorded Sep 17, 2026201-500199 contacts →

Exact match

“Our mission: To accelerate the availability of new, life-changing therapies for patients by partnering with global pharmaceutical companies to improve the quality and execution of…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15Exact matchBakersfield, CA, United StatesHQ recorded Sep 17, 202651-200192 contacts →

Exact match

“CBCC Global Research is a full service clinical contract research organization serving a wide spectrum of clinical research services including Phase II-IV clinical trials…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16Exact matchOverland Park, KS, United StatesHQ recorded Sep 17, 2026201-500168 contacts →

Exact match

“Dr.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17Exact matchRaleigh, NC, United StatesHQ recorded Sep 17, 202651-200167 contacts →

Exact match

“IDDI is a trusted clinical data science partner.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18Exact matchAustin, TX, United StatesHQ recorded Sep 17, 202651-200166 contacts →

Exact match

“Founded in 2006, Tekton Research is a multi-specialty clinical research site organization conducting Phase 1-4 clinical trials across neurology and psychiatry, cardiometabolic…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19Exact matchRaleigh, NC, United StatesHQ recorded Sep 17, 2026201-500161 contacts →

Exact match

“M3 Wake Research is a premier clinical trial network that has been conducting studies since 1984.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20Exact matchSan Antonio, TX, United StatesHQ recorded Sep 17, 2026201-500157 contacts →

Exact match

“NEXT Oncology, an Avacare business founded by Anthony W.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21Exact matchWest Bend, WI, United StatesHQ recorded Sep 17, 202651-200154 contacts →

Exact match

“Founded in 2007, Spaulding Clinical is a full-service, state-of-the-art paperless Phase I clinical pharmacology unit.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22Exact matchDallas, TX, United StatesHQ recorded Sep 17, 202651-200151 contacts →

Exact match

“Cromos Pharma is a US-based, international contract research organization delivering fully integrated clinical research solutions, in all trial phases, across a wide range of…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23Exact matchOrlando, FL, United StatesHQ recorded Sep 17, 202651-200150 contacts →

Exact match

“CNS Healthcare is dedicated to advancing safe and effective pharmaceuticals that improve the quality of healthcare worldwide.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24Exact matchDurham, NC, United StatesHQ recorded Sep 17, 202651-200131 contacts →

Exact match

“A contract research organization (CRO) built for collaboration.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 17, 2026201-500130 contacts →

Exact match

“At Castor, we believe in the power of clinical research and the power of technology.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 25 of 499 phase 1 clinical trial providers based in the United States

See the full list, filter by size, metro and specialty, and access 16,639 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Phase 1 clinical trial providers based in the United States at a glance

As of Sep 17, 2026
44.7%Verified-email coverage
74.7Average contacts per company
11-50Median size (employees)
5.8%Largest-city concentration · Miami
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
195
11-50
190
51-200
70
201-500
22
501-1,000
9
1,001-5,000
7
5,001-10,000
1
10001+
3

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 499 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “phase 1 clinical trial providers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 16,639 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 17, 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.

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 providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many phase 1 clinical trial providers are there based in the United States?

RevenueBase identified 499 company matches for phase 1 clinical trial providers associated with the United States 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 city has the most phase 1 clinical trial providers?

Miami leads with 29 company records, followed by San Diego (13) and Houston (11).

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 16,639 professional contacts with verified work emails tracked across these 499 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 499 phase 1 clinical trial providers based in the United States. 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.