Company lists · Data refreshed November 2026

Top 25 Patient research consultants worldwide

RevenueBase identified 2,127 company matches for patient research consultants worldwide as of November 2026 and tracks 180,999 professional contacts across them, including 79,353 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for patient research consultants 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 November 6, 2026. Country and city lists for patient research consultants 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 Nov 6, 2026 How this list was built
2,127Companies
180,999Contacts tracked
79,353Verified emails
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The 25 largest patient research consultants worldwide

Ranked by team size
Top 25 of 2,127 company matches for patient research consultants worldwide, 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 matchDurham, NC, United StatesHQ recorded Nov 6, 202610001+68,168 contacts →

Exact match

“IQVIA (NYSE:IQV) is a leading global provider of clinical research services, commercial insights and healthcare intelligence to the life sciences and healthcare industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact 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
4Exact matchRaleigh, NC, United StatesHQ recorded Nov 6, 202610001+4,804 contacts →

Exact match

“PRA is now an ICON plc company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20265,001-10,0003,308 contacts →

Exact match

“EVERSANA® is a leading independent provider of global services to the life sciences industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchZug, SwitzerlandHQ recorded Nov 6, 20261,001-5,0002,693 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSingapore, AustraliaHQ recorded Nov 6, 20261,001-5,0001,965 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBethesda, MD, United StatesHQ recorded Nov 6, 20261,001-5,0001,947 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,269 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCovington, United StatesHQ recorded Nov 6, 20261,001-5,0001,137 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPrinceton, United StatesHQ recorded Nov 6, 20261,001-5,0001,080 contacts →

Exact match

“PharmaACE is a US-headquartered, life sciences-focused consulting and analytics firm with a global presence across the United States, Germany, Canada, and India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGaithersburg, United StatesHQ recorded Nov 6, 20261,001-5,0001,024 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDurham, SC, United StatesHQ recorded Nov 6, 20261,001-5,0001,011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRockville, MD, United StatesHQ recorded Nov 6, 20261,001-5,000974 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRockville, MD, United StatesHQ recorded Nov 6, 2026n/a802 contacts →

Exact match

“MMG is a full-service global health communications group that specializes in patient recruitment and retention.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDurham, NC, United StatesHQ recorded Nov 6, 2026501-1,000753 contacts →

Exact match

“Experience the Cohesion Effect.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHouston, IL, United StatesHQ recorded Nov 6, 2026501-1,000600 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHangzhou, ChinaHQ recorded Nov 6, 20265,001-10,000557 contacts →

Exact match

“Tigermed (Stock code: 300347.SZ/3347.HK) is a leading provider of innovative clinical research solutions across the full life cycle of biopharmaceutical and medical device…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500551 contacts →

Exact match

“AXIS Clinicals Limited is one of the most experienced and fastest growing Clinical Research Organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDurham, NC, United StatesHQ recorded Nov 6, 202610001+537 contacts →

Exact match

“THIS PAGE IS NOT MONITORED.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchFramingham, MA, United StatesHQ recorded Nov 6, 2026501-1,000512 contacts →

Exact match

“Alira Health is a global healthcare consultancy redefining evidence generation through patient partnerships.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSouthborough, MA, United StatesHQ recorded Nov 6, 2026501-1,000506 contacts →

Exact match

“Veristat is the science-first full-service drug and biologic CRO and consultancy that integrates strategic planning, regulatory expertise, and clinical trial execution to rapidly…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFort Washington, PA, United StatesHQ recorded Nov 6, 2026201-500468 contacts →

Exact match

“M3 Global Research provides the most comprehensive and highest quality market research recruitment and support services available to the global healthcare industry with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Nov 6, 202651-200418 contacts →

Exact match

“P\S\L Group, Inc, through its subsidiaries, provides research and information solutions to the healthcare industry in Canada, the United States, and internationally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMontreal, CanadaHQ recorded Nov 6, 2026201-500416 contacts →

Exact match

“JSS Medical Research is a full service clinical research organization (CRO) with strong academic affiliations offering a wide range of services internationally.”

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

Showing 25 of 2,127 patient research consultants worldwide

See the full list, filter by size, metro and specialty, and access 79,353 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Patient research consultants worldwide at a glance

As of Nov 6, 2026
43.8%Verified-email coverage
85.1Average contacts per company
11-50Median size (employees)
3.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,017
11-50
706
51-200
250
201-500
69
501-1,000
27
1,001-5,000
26
5,001-10,000
5
10001+
21

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 patient research consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “patient research consultants” 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 79,353 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.

Patient research consultants by location

10 lists · largest first

Every Patient research consultants 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 “patient research consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many patient research consultants are there worldwide?

RevenueBase identified 2,127 company matches for patient research consultants worldwide 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?

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

Which country has the most patient research consultants?

The United States leads with 813 companies, followed by the United Kingdom (190) and India (179). Every patient research consultants list by country and city is linked on this page.

Which city has the most patient research consultants?

London leads with 79 company records, followed by New York (29) and Bangalore (25).

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 79,353 professional contacts with verified work emails tracked across these 2,127 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.