Company lists · Data refreshed September 2026

Top 25 Clinical research consulting firms based in Washington, United States

Name: Clinical research consulting firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 41 companies tracked

RevenueBase identified 41 clinical research consulting firms headquartered in Washington, United States as of September 2026 and tracks 864 professional contacts across them, including 424 with verified work emails. Across the United States, Boston is the largest hub for this category (158 companies); Washington has 41.

This list covers clinical research consulting firms headquartered in Washington, 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 27, 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 27, 2026 86% judged on-target in blind review

41Companies

864Contacts tracked

424Verified emails

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The 25 largest clinical research consulting firms based in Washington, United States

Ranked by team size

Top 25 of 41 clinical research consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to clinical research consulting firms: 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	Mcra, An Iqvia Business	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 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 27, 2026
2	Continuum Clinical, A Spectrum Science Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	97 contacts →
	Partial evidence “Continuum Clinical is a global clinical trial solutions provider that elevates interest, increases access, and enhances experiences in clinical trials.” Source: RevenueBase Database · checked Sep 27, 2026
3	KX Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	88 contacts →
	Partial evidence “For more than 40 years, Kx Advisors, part of BGBx Consulting, has provided strategy consulting services to help healthcare executives achieve critical business growth goals.” Source: RevenueBase Database · checked Sep 27, 2026
4	Scendea	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	76 contacts →
	Partial evidence “Scendea is an international product development, regulatory, and compliance consulting group serving the pharmaceutical and biotechnology industry.” Source: RevenueBase Database · checked Sep 27, 2026
5	Advi Health	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	66 contacts →
	Indirect evidence “ADVI offers expert advice and influential solutions, informed by data and guided by a clear vision of the complex intersection of life sciences and healthcare innovation…” Source: RevenueBase Database · checked Sep 27, 2026
6	Oriel Stat A Matrix	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	62 contacts →
	Indirect evidence “Oriel STAT-A-MATRIX has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: RevenueBase Database · checked Sep 27, 2026
7	NDA Partners, A Propharma Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	53 contacts →
	Partial evidence “NDA Partners, a ProPharma Company, is a life sciences management consulting organization focused on providing product development and regulatory services to the pharmaceutical…” Source: RevenueBase Database · checked Sep 27, 2026
8	L&m Policy Research, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	36 contacts →
	Partial evidence “Established in 2004, L&M is a small, minority- and women-owned health policy research firm specializing in health services, outcomes, policy, and consumer research related to how…” Source: RevenueBase Database · checked Sep 27, 2026
9	Greenwald Research	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Greenwald Research is a consultative partner to health and wealth leaders that leverages industry expertise, access to experts, and a custom, collaborative approach to produce…” Source: RevenueBase Database · checked Sep 27, 2026
10	The Weinberg Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	17 contacts →
	Indirect evidence “The Weinberg Group, a ProPharma Group company, is the global leader in regulatory and compliance services, with headquarters in Washington, D.C.” Source: RevenueBase Database · checked Sep 27, 2026
11	Greenleaf Health, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “Greenleaf Health has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: RevenueBase Database · checked Sep 27, 2026
12	Insight Executive Search	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	13 contacts →
	Partial evidence “INSIGHT EXECUTIVE SEARCH serves clients within the healthcare, social research, life sciences, financial, public policy and non-profit sectors.” Source: RevenueBase Database · checked Sep 27, 2026
13	TSG Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	11 contacts →
	Indirect evidence “For over 30 years, TSG has provided companies around the world with regulatory guidance and scientific expertise.” Source: RevenueBase Database · checked Sep 27, 2026
14	Intermedia Survey Institute	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	8 contacts →
	Partial evidence “InterMedia is is a global research consultancy that partners with mission-driven organizations seeking to make an impact in people’s lives around the world.” Source: RevenueBase Database · checked Sep 27, 2026
15	Continental Clinical Solutions	Partial evidence	Washington, United StatesHQ checked Sep 27, 2026	11-50	7 contacts →
	Partial evidence “Continental Clinical Solutions is a leading initiation-ready trial site service provider.” Source: RevenueBase Database · checked Sep 27, 2026
16	Destahealth	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	5 contacts →
	Partial evidence “DestaHealth is a team of strategic planners, passionate operators and innovative clinicians, united to support owners and organizations realize their business goals.” Source: RevenueBase Database · checked Sep 27, 2026
17	Health Market Experts, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	4 contacts →
	Partial evidence “For health and life sciences companies addressing unmet needs, Health Market Experts, LLC, is a consulting firm specializing in market strategy.” Source: RevenueBase Database · checked Sep 27, 2026
18	Smartpharma LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	4 contacts →
	Partial evidence “SmartPharma specializes in commercial and strategic consulting for emerging pharmaceutical companies, big pharma, and investors, focused on products in development.” Source: RevenueBase Database · checked Sep 27, 2026
19	Mantid International LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	3 contacts →
	Partial evidence “MANTID INTERNATIONAL LLC is a compliance and business intelligence consulting firm.” Source: RevenueBase Database · checked Sep 27, 2026
20	Virginia Burchett Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	2 contacts →
	Partial evidence “HISTORY Founded in 2014, VBurchett Consulting offers a diverse knowledge of the healthcare industry, advising organizations in the public and private sectors on state and national…” Source: RevenueBase Database · checked Sep 27, 2026
21	Contract In-House Counsel And Consultants, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “Marc represents FDA-regulated companies in the food, dietary supplement, beverage, cosmetic, medical device and drug industries.” Source: RevenueBase Database · checked Sep 27, 2026
22	Revelstone Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “Revelstone provides responsive, objective, thorough, agile, efficient, and effective solutions during your pivotal and transformational periods.” Source: RevenueBase Database · checked Sep 27, 2026
23	Regulatory Strategies And Solutions Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	2 contacts →
	Partial evidence “RSS Group offers consulting services customized to help our clients navigate the complex regulatory policy landscape.” Source: RevenueBase Database · checked Sep 27, 2026
24	Tiber Creek Partners LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	2 contacts →
	Indirect evidence “Tiber Creek Partners, LLC provides subject matter expertise, including scientific and business counseling, to biotechnology companies that seek to use non-dilutive capital from…” Source: RevenueBase Database · checked Sep 27, 2026
25	Kammerman Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	1 contacts →
	Indirect evidence “WHAT I DO: I help pharmaceutical & biotech companies achieve FDA regulatory success by leveraging my statistical expertise & deep industry knowledge from almost 30 years of…” Source: RevenueBase Database · checked Sep 27, 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: clinical research consulting firms. 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 clinical research consulting firms.
Partial evidence: Its own public description names part of clinical research consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical research consulting firms. 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 41 clinical research consulting firms based in Washington, United States

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Clinical research consulting firms based in Washington, United States at a glance

As of Sep 27, 2026

49.1%Verified-email coverage

21.1Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 41 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 clinical research consulting firms, 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 Washington, United States whose own description of what they do matches “clinical research consulting firms”. 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 clinical research consulting firms), 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 clinical research consulting firms, and records with no verified work email. Companies headquartered outside Washington 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, 424 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 27, 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.

Clinical research consulting firms by metro in the United States

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 clinical research consulting firms, 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 clinical research consulting firms are there based in Washington, United States?

RevenueBase identified 41 clinical research consulting firms headquartered in Washington, 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?

Mcra, An Iqvia Business, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most clinical research consulting firms?

Boston leads the United States with 158 headquartered companies, followed by New York (153) and San Diego (137). Washington has 41.

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 424 verified decision-maker contacts tracked across these 41 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 27, 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.