Company lists · Data refreshed November 2026

Top 25 Trial protocol development services based in the United States

RevenueBase identified 427 company matches for trial protocol development services associated with the United States as of November 2026 and tracks 63,112 professional contacts across them, including 29,561 with verified work emails. Miami is the largest hub.

This list covers company matches for trial protocol development services 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 November 6, 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 Nov 6, 2026 How this list was built
427Companies
63,112Contacts tracked
29,561Verified emails
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The 25 largest trial protocol development services based in the United States

Ranked by team size
Top 25 of 427 company matches for trial protocol development services based in the United States, 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 matchRaleigh, NC, United StatesHQ recorded Nov 6, 202610001+20,436 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact 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
4Exact matchMorrisville, NC, United StatesHQ recorded Nov 6, 20261,001-5,0002,732 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchRaleigh, NC, United StatesHQ recorded Nov 6, 20261,001-5,000745 contacts →

Exact match

“Caidya is a multi-therapeutic clinical research organization (CRO) serving innovators worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 2026201-500235 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchRaleigh, NC, United StatesHQ recorded Nov 6, 2026201-500176 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSomerset, NJ, United StatesHQ recorded Nov 6, 2026201-500163 contacts →

Exact match

“Harvest Integrated Research Organization (HiRO) is a globally oriented, innovative clinical research organization (CRO).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOrlando, TN, United StatesHQ recorded Nov 6, 202651-200162 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDurham, NC, United StatesHQ recorded Nov 6, 202651-200131 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Mateo, CA, United StatesHQ recorded Nov 6, 202651-200109 contacts →

Exact match

“Established in 1998 InClin is a full service Contract Research Organization with offices in the San Francisco Bay Area and Sydney, Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Helios Clinical Research actively works with biopharma partners to accelerate the drug approval process.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWaltham, MA, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“LLX Solutions is now a part of Quantive Intelligence (QI), a Decision Sciences platform providing specialized biometrics expertise across biostatistics, statistical programming…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPlantation, FL, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Boca Raton Clinical Research (BRCR) is a leading clinical research organization that specializes in supporting clinical trials across a range of therapeutic areas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“Bright Research is a clinical research organization (CRO) specializing in medical devices.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPrinceton, NJ, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“Global Clinical Trials (GCT) is a premium contract-research organization (CRO) that offers support for the clinical Phase I-IV studies as well as post-marketing activities to Big…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBakersfield, CA, United StatesHQ recorded Nov 6, 202651-20079 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWichita, KS, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“Heartland Research Associates, a company of The Alliance for Multispecialty Research, has a mission to provide quality medical care to our research participants, with a commitment…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“MedTrials, Inc, is a privately held contract research organization (CRO) celebrating over 30 years of demonstrated clinical trial management expertise with local know-how and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchKnoxville, TN, United StatesHQ recorded Nov 6, 2026501-1,00064 contacts →

Exact match

“AMR - is an award-winning, industry-leading clinical research company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, NC, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“MedSource, now part of Ergomed, is an award-winning clinical research organization (CRO) that delivers high-quality clinical trials through strong relationships and specializes in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBellevue, WA, United StatesHQ recorded Nov 6, 202611-5060 contacts →

Exact match

“NWCRC is a multi-specialty medical research center, dedicated to providing the highest quality medical evaluation services and interim care to our patients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBala Cynwyd, PA, United StatesHQ recorded Nov 6, 20261,001-5,00060 contacts →

Exact match

“WCG delivers transformational solutions that stimulate growth, foster compliance, and maximize efficiency for those who perform clinical trials.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Benchmark Research, an Avacare business, has a track record of safety and expertise, having conducted more than trials since 1997 at clinics located in California, Louisiana and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchOrlando, United StatesHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“Orlando Clinical Research Center (OCRC) is an independent Phase I-IV custom built sq.”

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

Showing 25 of 427 trial protocol development services based in the United States

See the full list, filter by size, metro and specialty, and access 29,561 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Trial protocol development services based in the United States at a glance

As of Nov 6, 2026
46.8%Verified-email coverage
147.8Average contacts per company
11-50Median size (employees)
4.7%Largest-city concentration · Miami
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
196
11-50
157
51-200
53
201-500
8
501-1,000
3
1,001-5,000
4
10001+
5

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 427 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 “trial protocol development 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. 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 29,561 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.

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

How many trial protocol development services are there based in the United States?

RevenueBase identified 427 company matches for trial protocol development services associated with the United States 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?

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

Which city has the most trial protocol development services?

Miami leads with 20 company records, followed by Austin (8) and Chicago (8).

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 29,561 professional contacts with verified work emails tracked across these 427 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.