Company lists · Data refreshed September 2026

Top 25 Health services research organizations based in the United States

Name: Health services research organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 791 companies tracked

RevenueBase identified 791 health services research organizations headquartered in the United States as of September 2026 and tracks 93,208 professional contacts across them, including 36,289 with verified work emails. Washington is the largest hub.

This list covers health services research organizations 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 20, 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 20, 2026 86% judged on-target in blind review

791Companies

93,208Contacts tracked

36,289Verified emails

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The 25 largest health services research organizations based in the United States

Ranked by team size

Top 25 of 791 health services research organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to health services research organizations: 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	IQVIA	Strong evidence	Durham, NC, United StatesHQ checked Sep 20, 2026	10001+	63,824 contacts →
	Strong evidence “IQVIA (NYSE:IQV) is a leading global provider of clinical research services, commercial insights and healthcare intelligence to the life sciences and healthcare industries.” Source: RevenueBase Database · checked Sep 20, 2026
2	PRA Health Sciences	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	10001+	4,708 contacts →
	Indirect evidence “PRA is now an ICON plc company.” Source: RevenueBase Database · checked Sep 20, 2026
3	Westat	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	1,001-5,000	3,248 contacts →
	Partial evidence “Westat offers innovative professional services to help clients improve outcomes in health, education, and social policy.” Source: RevenueBase Database · checked Sep 20, 2026
4	CTI Clinical Trial And Consulting Services	Partial evidence	Covington, KY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,043 contacts →
	Partial 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 20, 2026
5	Advisory Board	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	924 contacts →
	Partial evidence “Advisory Board helps leaders and future leaders in the healthcare industry work smarter and faster by providing provocative insights, actionable strategies, and practical tools to…” Source: RevenueBase Database · checked Sep 20, 2026
6	Institute For Health Metrics And Evaluation	Strong evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	201-500	810 contacts →
	Strong evidence “The Institute for Health Metrics and Evaluation (IHME) is an independent global health research center at the University of Washington that provides rigorous and comparable…” Source: RevenueBase Database · checked Sep 20, 2026
7	Health Management Associates	Strong evidence	Okemos, MI, United StatesHQ checked Sep 20, 2026	501-1,000	658 contacts →
	Strong evidence “Health Management Associates is an independent national research and consulting firm specializing in complex health care program and policy issues.” Source: RevenueBase Database · checked Sep 20, 2026
8	Advocates For Human Potential, INC	Partial evidence	Sudbury, MA, United StatesHQ checked Sep 20, 2026	201-500	559 contacts →
	Partial evidence “For 40 years, Advocates for Human Potential, Inc.(AHP) has focused our people, passion, and expertise on creating practical solutions to improve health and human services systems…” Source: RevenueBase Database · checked Sep 20, 2026
9	Patient-Centered Outcomes Research Institute Pcori	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	519 contacts →
	Partial evidence “PCORI helps people make informed healthcare decisions, and improves healthcare delivery and outcomes, by producing and promoting high-integrity, evidence-based information that…” Source: RevenueBase Database · checked Sep 20, 2026
10	JBS International, INC	Indirect evidence	North Bethesda, MD, United StatesHQ checked Sep 20, 2026	201-500	506 contacts →
	Indirect evidence “Established in 1985 by two women, JBS International, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
11	M3 Global Research	Strong evidence	Fort Washington, PA, United StatesHQ checked Sep 20, 2026	201-500	444 contacts →
	Strong evidence “M3 Global Research provides the most comprehensive and highest quality market research recruitment and support services available to the global healthcare industry with…” Source: RevenueBase Database · checked Sep 20, 2026
12	The IMA Group	Partial evidence	Tarrytown, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	432 contacts →
	Partial evidence “For over 30 years, The IMA Group has been dedicated to enhancing the livelihood and productivity of individuals and organizations navigating challenging periods of health, work…” Source: RevenueBase Database · checked Sep 20, 2026
13	Health Research, INC	Strong evidence	Menands, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	379 contacts →
	Strong evidence “Health Research, Inc.(HRI) contributes to the health and well-being of the people of New York State by complementing and enabling the strategic public health goals of the New York…” Source: RevenueBase Database · checked Sep 20, 2026
14	PPD Evidera Solutions	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	501-1,000	363 contacts →
	Indirect evidence “PPD™ Evidera™ solutions empower life sciences companies to demonstrate the real-world effectiveness, safety, and value of therapies throughout their life cycle, from early…” Source: RevenueBase Database · checked Sep 20, 2026
15	Kaiser Permanente Center For Health Research	Strong evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	51-200	316 contacts →
	Strong evidence “Founded in 1964, the Kaiser Permanente Center for Health Research (CHR) is focused on advancing knowledge to improve health.” Source: RevenueBase Database · checked Sep 20, 2026
16	Battelle Energy Alliance LLC BEA ETC	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	51-200	311 contacts →
	Indirect evidence “BATTELLE ENERGY ALLIANCE LLC BEA ETC is a civic & social organization company based out of PO BOX 1625, Idaho Falls, Idaho, United States.” Source: RevenueBase Database · checked Sep 20, 2026
17	Technical Resources International, INC	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	201-500	289 contacts →
	Partial evidence “Founded in 1979, Technical Resources International, Incorporated (TRI) is a certified Hispanic woman-owned full service contract research organization plus (CRO+).” Source: RevenueBase Database · checked Sep 20, 2026
18	DSS Research	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 20, 2026	201-500	284 contacts →
	Strong evidence “DSS provides actionable research, analytics & market insights to healthcare organizations.” Source: RevenueBase Database · checked Sep 20, 2026
19	Ispor The Professional Society For Health Economics And Outcomes Research	Strong evidence	Lawrenceville, NJ, United StatesHQ checked Sep 20, 2026	n/a	265 contacts →
	Strong evidence “ISPOR, the professional society for health economics and outcomes research (HEOR), is an international, multistakeholder, nonprofit dedicated to advancing HEOR excellence to…” Source: RevenueBase Database · checked Sep 20, 2026
20	Arkansas Foundation For Medical Care	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 20, 2026	201-500	251 contacts →
	Indirect evidence “AFMC was incorporated in 1972 as a private nonprofit educational organization.” Source: RevenueBase Database · checked Sep 20, 2026
21	The Lewin Group	Partial evidence	Falls Church, VA, United StatesHQ checked Sep 20, 2026	201-500	231 contacts →
	Partial evidence “The Lewin Group is the Consulting business unit within OptumServe, the federal health services business of Optum and UnitedHealth Group.” Source: RevenueBase Database · checked Sep 20, 2026
22	Regenstrief Institute, INC	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	51-200	230 contacts →
	Strong evidence “Regenstrief Institute, Inc, an international leader in electronic medical records and health care data integration, is a medical research and development organization focused on…” Source: RevenueBase Database · checked Sep 20, 2026
23	Genesis Research Group	Partial evidence	Hoboken, NJ, United StatesHQ checked Sep 20, 2026	201-500	226 contacts →
	Partial evidence “Genesis Research Group empowers life science companies to innovate differently by fundamentally transforming the way they engage with research partners.” Source: RevenueBase Database · checked Sep 20, 2026
24	Mcra, An Iqvia Business	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	226 contacts →
	Partial evidence “MCRA, an IQVIA business, is a leading full-service medical device, diagnostics, and biologics CRO and consulting advisory firm helping global healthcare companies maximize the…” Source: RevenueBase Database · checked Sep 20, 2026
25	ICF Macro	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 20, 2026	5,001-10,000	197 contacts →
	Indirect evidence “As of April of 2009, Macro International is now part of ICF.” Source: RevenueBase Database · checked Sep 20, 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: health services research organizations. 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 health services research organizations.
Partial evidence: Its own public description names part of health services research organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name health services research organizations. 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 791 health services research organizations based in the United States

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Health services research organizations based in the United States at a glance

As of Sep 20, 2026

38.9%Verified-email coverage

117.8Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Washington

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

400

11-50

243

51-200

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 791 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 health services research organizations, 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 “health services research organizations”. 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 health services research organizations), 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 health services research organizations, 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, 36,289 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 20, 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.

Health services research organizations by metro

Health services research organizations in Washington38
Health services research organizations in New York30

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 health services research organizations, 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 health services research organizations are there based in the United States?

RevenueBase identified 791 health services research organizations 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?

IQVIA, headquartered in Durham, tops this list with the largest team on record.

Which city has the most health services research organizations?

Washington leads with 38 headquartered companies, followed by New York (30) and Boston (19).

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 36,289 verified decision-maker contacts tracked across these 791 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 20, 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 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.