Company lists · Data refreshed September 2026

Top 25 Healthcare antitrust law firms based in Washington, United States

Name: Healthcare antitrust law 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 28, 2026 35 companies tracked

RevenueBase identified 35 healthcare antitrust law firms headquartered in Washington, United States as of September 2026 and tracks 3,247 professional contacts across them, including 2,120 with verified work emails. Across the United States, New York is the largest hub for this category (56 companies); Washington has 35.

This list covers healthcare antitrust law 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 28, 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 28, 2026 86% judged on-target in blind review

35Companies

3,247Contacts tracked

2,120Verified emails

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The 25 largest healthcare antitrust law firms based in Washington, United States

Ranked by team size

Top 25 of 35 healthcare antitrust law firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to healthcare antitrust law 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	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 28, 2026
2	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 28, 2026
3	Kellogg, Hansen, Todd, Figel & Frederick Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	211 contacts →
	Indirect evidence “Kellogg Hansen works in complex trial and appellate litigation.” Source: RevenueBase Database · checked Sep 28, 2026
4	Zuckerman Spaeder LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	155 contacts →
	Indirect evidence “Zuckerman Spaeder LLP is consistently recognized as a leading national litigation boutique.” Source: RevenueBase Database · checked Sep 28, 2026
5	Hollingsworth LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Indirect evidence “Hollingsworth LLP is among the nation’s leading litigation firms.” Source: RevenueBase Database · checked Sep 28, 2026
6	Powers LAW	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	101 contacts →
	Strong evidence “Powers Pyles Sutter & Verville PC is a Washington, DC-based law firm that began with a strong focus on healthcare law and healthcare policy and has gradually expanded capabilities…” Source: RevenueBase Database · checked Sep 28, 2026
7	Olsson Frank Weeda Terman Matz PC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	49 contacts →
	Partial evidence “Olsson Frank Weeda Terman Matz PC The nation’s premier FDA, USDA, and health care law firm, serving clients before federal agencies, courts, and Congress.” Source: RevenueBase Database · checked Sep 28, 2026
8	Tiber Hudson LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “Tiber Hudson LLC is a boutique law firm focused in providing legal services including complex commercial litigation, complex commercial transactions, corporate structure and…” Source: RevenueBase Database · checked Sep 28, 2026
9	Rule Garza Howley LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “Rule Garza Howley LLP provides sophisticated antitrust advice and representation, drawing on a proven track record of more than four decades of successful outcomes with the DOJ…” Source: RevenueBase Database · checked Sep 28, 2026
10	Stein Mitchell Beato & Missner LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	26 contacts →
	Partial evidence “Stein Mitchell Beato & Missner LLP is a law firm located in Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
11	Liles Parker Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Liles Parker PLLC is a full service law firm that focuses its practice in the regulatory health law space.” Source: RevenueBase Database · checked Sep 28, 2026
12	Eyman Partners, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “At Eyman Partners, we share a passion for addressing the issues that shape our health care system, and a commitment to our clients engaged in transforming that system and making…” Source: RevenueBase Database · checked Sep 28, 2026
13	Baker & Miller Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “Baker & Miller PLLC was founded in 1995 to provide sophisticated antitrust advice to a broad range of commercial clients and other law firms.” Source: RevenueBase Database · checked Sep 28, 2026
14	Mills Black LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “Mills Black LLP’s practice focuses on all aspects of health care and maritime law and practice, including transactional, regulatory, and litigation matters.” Source: RevenueBase Database · checked Sep 28, 2026
15	Feldesman Leifer LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
16	Kotchen & LOW LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Kotchen & Low LLP is a litigation boutique that focuses on commercial litigation, employment discrimination, antitrust, class actions, and patent infringement litigation.” Source: RevenueBase Database · checked Sep 28, 2026
17	Oliver-Zhang LAW	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Oliver-Zhang law is built upon the drive to remedy injustice and help those in need.” Source: RevenueBase Database · checked Sep 28, 2026
18	LAWMD	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
19	G2z LAW Group, Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “At G2Z Law Group, PLLC, our attorneys counsel clients in different aspects of Health Law, including, healthcare regulations, licensing or certification of providers, relations…” Source: RevenueBase Database · checked Sep 28, 2026
20	Moginrubin LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	1 contacts →
	Partial evidence “MoginRubin is a competition law firm prepared to meet the most demanding challenges in litigation, strategic counseling, and policy advocacy.” Source: RevenueBase Database · checked Sep 28, 2026
21	Penn Avenue LAW & Policy	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Penn Avenue Law & Policy is proudly focused on select areas of FDA law.” Source: RevenueBase Database · checked Sep 28, 2026
22	Douglas & Boykin, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “The Washington, DC litigation and government relations law firm of Douglas & Boykin, PLLC operates in a dynamic atmosphere where client priorities are paramount and winning…” Source: RevenueBase Database · checked Sep 28, 2026
23	Highbridge LAW Firm	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “HBL Business Attorneys empowers small to mid-cap technology and healthcare companies by delivering timely, focused, and exceptional counseling and legal services in litigation…” Source: RevenueBase Database · checked Sep 28, 2026
24	Kressin Meador LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Strong evidence “We are a boutique antitrust law firm focused on helping our clients anticipate and respond to the rapid developments in antitrust law and competition policy-including through…” Source: RevenueBase Database · checked Sep 28, 2026
25	Lanton, Lanton & Sosa LAW Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Where innovators in healthcare, tech and clean energy come for advice.” Source: RevenueBase Database · checked Sep 28, 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: healthcare antitrust law 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 healthcare antitrust law firms.
Partial evidence: Its own public description names part of healthcare antitrust law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name healthcare antitrust law 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 35 healthcare antitrust law firms based in Washington, United States

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Healthcare antitrust law firms based in Washington, United States at a glance

As of Sep 28, 2026

65.3%Verified-email coverage

92.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 35 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 healthcare antitrust law 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 “healthcare antitrust law 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 healthcare antitrust law 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 healthcare antitrust law 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, 2,120 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 28, 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.

Healthcare antitrust law 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 healthcare antitrust law 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 healthcare antitrust law firms are there based in Washington, United States?

RevenueBase identified 35 healthcare antitrust law 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?

Venable LLP, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most healthcare antitrust law firms?

New York leads the United States with 56 headquartered companies, followed by Los Angeles (38) and Chicago (35). Washington has 35.

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 2,120 verified decision-maker contacts tracked across these 35 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 28, 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.