Company lists · Data refreshed September 2026

Top 25 Clinical trial law firms based in Washington, United States

RevenueBase identified 39 company matches for clinical trial law firms associated with Washington, United States as of September 2026 and tracks 1,052 professional contacts across them, including 517 with verified work emails. Across the United States, Houston is the largest hub for this category (95 companies); Washington has 39.

This list covers company matches for clinical trial law firms associated with Washington, 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 September 27, 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 Sep 27, 2026 How this list was built
39Companies
1,052Contacts tracked
517Verified emails
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The 25 largest clinical trial law firms based in Washington, United States

Ranked by team size
Top 25 of 39 company matches for clinical trial law firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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 matchWashington, DC, United StatesHQ recorded Sep 27, 202651-200226 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-200211 contacts →

Exact match

“Kellogg Hansen works in complex trial and appellate litigation.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-20077 contacts →

Exact match

“In just over four years, Wilkinson Stekloff has established itself as the leading trial litigation boutique in the country.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-20076 contacts →

Exact match

“Scendea is an international product development, regulatory, and compliance consulting group serving the pharmaceutical and biotechnology industry.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-5062 contacts →

Exact match

“Oriel STAT-A-MATRIX has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-20060 contacts →

Exact match

“Rueb Stoller Daniel, LLP is a law firm made up of nationally recognized trial attorneys whom have successfully represented tens of thousands of clients throughout the United…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-5028 contacts →

Exact match

“Nationwide law firm with a focus on personal injuries due to dangerous pharmaceutical medications, defective medical devices, and sexual assault.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-20026 contacts →

Exact match

“Stein Mitchell Beato & Missner LLP is a law firm located in Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-20017 contacts →

Exact match

“The Weinberg Group, a ProPharma Group company, is the global leader in regulatory and compliance services, with headquarters in Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-5014 contacts →

Exact match

“Greenleaf Health has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-1010 contacts →

Exact match

“We see a future where individuals who need legal help are supported not just by skilled litigators, but also technologists who leverage the latest tools to deliver effective…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-509 contacts →

Exact match

“John Selinger, Esq.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-508 contacts →

Exact match

“The Law Offices of Leah V.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchWashington, United StatesHQ recorded Sep 27, 202611-507 contacts →

Exact match

“Continental Clinical Solutions is a leading initiation-ready trial site service provider.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-106 contacts →

Exact match

“Mills Black LLP’s practice focuses on all aspects of health care and maritime law and practice, including transactional, regulatory, and litigation matters.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-104 contacts →

Exact match

“Bertram & Murphy is a medical malpractice law firm located in Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202611-503 contacts →

Exact match

“Doctors in the Courtroom, Fighting for the Injured Nationwide Medical malpractice claims can be wrought with incredible complexity, but chances are that there are few or none who…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-103 contacts →

Exact match

“RDP Law Group is a nationwide firm that will help you recover compensation for your injuries.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-102 contacts →

Exact match

“At G2Z Law Group, PLLC, our attorneys counsel clients in different aspects of Health Law, including, healthcare regulations, licensing or certification of providers, relations…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchWashington, DC, United StatesHQ recorded Sep 27, 202651-2002 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Marc represents FDA-regulated companies in the food, dietary supplement, beverage, cosmetic, medical device and drug industries.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-102 contacts →

Exact match

“FDA Regulatory Counsel is the nation's premier life science boutique for consumer product companies, private equity, and commercial lenders/investors in FDA-regulated spaces.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-102 contacts →

Exact match

“ABOUT US.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Revelstone provides responsive, objective, thorough, agile, efficient, and effective solutions during your pivotal and transformational periods.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261-101 contacts →

Exact match

“Penn Avenue Law & Policy is proudly focused on select areas of FDA law.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 39 clinical trial law firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 517 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clinical trial law firms based in Washington, United States at a glance

As of Sep 27, 2026
49.1%Verified-email coverage
27.0Average contacts per company
11-50Median size (employees)
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
13
51-200
9

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 39 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 Washington, United States whose business descriptions match “clinical trial law firms” 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 517 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 September 27, 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 “clinical trial law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clinical trial law firms are there based in Washington, United States?

RevenueBase identified 39 company matches for clinical trial law firms associated with Washington, United States as of September 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?

Mcra, An Iqvia Business tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most clinical trial law firms?

Houston leads the United States with 95 company records, followed by Chicago (77) and New York (75). Washington has 39.

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 517 professional contacts with verified work emails tracked across these 39 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 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 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.