Company lists · Data refreshed October 2026

Top 25 Clinical research site networks worldwide

RevenueBase identified 4,616 company matches for clinical research site networks worldwide as of October 2026 and tracks 193,642 professional contacts across them, including 79,892 with verified work emails. The United States is the largest market and Miami the largest hub.

This list covers company matches for clinical research site networks 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 research site networks 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
4,616Companies
193,642Contacts tracked
79,892Verified emails
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The 25 largest clinical research site networks worldwide

Ranked by team size
Top 25 of 4,616 company matches for clinical research site networks 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchRaleigh, NC, United StatesHQ recorded Oct 9, 202610001+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
2Exact matchWilmington, NC, United StatesHQ recorded Oct 9, 202610001+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
3Exact matchResearch Triangle Park, NC, United StatesHQ recorded Oct 9, 202610001+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
4Exact matchCincinnati, OH, United StatesHQ recorded Oct 9, 20265,001-10,0006,234 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
5Exact matchRaleigh, NC, United StatesHQ recorded Oct 9, 202610001+4,768 contacts →

Exact match

“PRA is now an ICON plc company.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6Exact matchResearch Triangle Park, NC, United StatesHQ recorded Oct 9, 20261,001-5,0003,794 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
7Exact matchMorrisville, NC, United StatesHQ recorded Oct 9, 20261,001-5,0002,670 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
8Exact matchZug, SwitzerlandHQ recorded Oct 9, 20261,001-5,0002,622 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
9Exact matchBlue Bell, PA, United StatesHQ recorded Oct 9, 20261,001-5,0002,127 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
10Exact matchBethesda, MD, United StatesHQ recorded Oct 9, 20261,001-5,0001,917 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
11Exact matchSingapore, AustraliaHQ recorded Oct 9, 20261,001-5,0001,906 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
12Exact matchAhmedabad, IndiaHQ recorded Oct 9, 20261,001-5,0001,615 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
13Exact matchColumbia, MD, United StatesHQ recorded Oct 9, 2026501-1,0001,604 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
14Exact matchCambridge, MA, United StatesHQ recorded Oct 9, 20261,001-5,0001,574 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
15Exact matchAhmedabad, IndiaHQ recorded Oct 9, 2026501-1,0001,319 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
16Exact matchConshohocken, PA, United StatesHQ recorded Oct 9, 20261,001-5,0001,303 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
17Exact matchAhmedabad, IndiaHQ recorded Oct 9, 20261,001-5,0001,272 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
18Exact matchLondon, United KingdomHQ recorded Oct 9, 20261,001-5,0001,238 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
19Exact matchCary, NC, United StatesHQ recorded Oct 9, 20261,001-5,0001,179 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
20Exact matchLincoln, NE, United StatesHQ recorded Oct 9, 20261,001-5,0001,151 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
21Exact matchCovington, KY, United StatesHQ recorded Oct 9, 20261,001-5,0001,102 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
22Exact matchGaithersburg, MD, United StatesHQ recorded Oct 9, 20261,001-5,0001,001 contacts →

Exact match

“Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23Exact matchDurham, NC, United StatesHQ recorded Oct 9, 20261,001-5,000991 contacts →

Exact match

“Velocity is the world’s leading organization of fully integrated clinical research sites.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24Exact matchDeerfield, IL, United StatesHQ recorded Oct 9, 2026501-1,000977 contacts →

Exact match

“Advanced Clinical is a clinical development and strategic resourcing organization committed to providing a better clinical experience across the drug development journey.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25Exact matchRockville, MD, United StatesHQ recorded Oct 9, 20261,001-5,000945 contacts →

Exact match

“Emmes is a Contract Research Organization delivering complex clinical trials through therapeutic expertise, scientific rigor, and technology-enabled execution.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

Showing 25 of 4,616 clinical research site networks worldwide

See the full list, filter by size, metro and specialty, and access 79,892 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clinical research site networks worldwide at a glance

As of Oct 9, 2026
41.3%Verified-email coverage
42.0Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · Miami
Oct 9, 2026Page data refreshed

Companies by employee count

1-10
1,794
11-50
1,752
51-200
722
201-500
180
501-1,000
68
1,001-5,000
65
5,001-10,000
10
10001+
18

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 research site networks are linked below.
What qualifies
Company records worldwide whose business descriptions match “clinical research site networks” 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 79,892 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 research site networks by location

29 lists · largest first

Every Clinical research site networks 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 research site networks”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clinical research site networks are there worldwide?

RevenueBase identified 4,616 company matches for clinical research site networks 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 research site networks?

The United States leads with 1,733 companies, followed by India (371) and the United Kingdom (193). Every clinical research site networks list by country and city is linked on this page.

Which city has the most clinical research site networks?

Miami leads with 77 company records, followed by London (59) and Hyderabad (49).

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 79,892 professional contacts with verified work emails tracked across these 4,616 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.