Company lists · Data refreshed September 2026

Top 25 Health insurance law firms based in Washington, United States

Name: Health insurance 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 54 companies tracked

RevenueBase identified 54 health insurance law firms headquartered in Washington, United States as of September 2026 and tracks 3,595 professional contacts across them, including 2,322 with verified work emails. Across the United States, New York is the largest hub for this category (115 companies); Washington has 54.

This list covers health insurance 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

54Companies

3,595Contacts tracked

2,322Verified emails

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The 25 largest health insurance law firms based in Washington, United States

Ranked by team size

Top 25 of 54 health insurance 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 health insurance 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	Kiernan Trebach LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	270 contacts →
	Partial evidence “Kiernan Trebach is a mid-sized law firm with offices throughout the Northeast and Mid-Atlantic regions of the United States – from Maine to Florida.” Source: RevenueBase Database · checked Sep 28, 2026
4	Groom LAW Group, Chartered	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	174 contacts →
	Partial evidence “Groom Law Group, Chartered is widely recognized as the leading benefits law firm in the United States with over 90 attorneys dedicated solely to the practice of employee benefits…” Source: RevenueBase Database · checked Sep 28, 2026
5	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
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	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	49 contacts →
	Strong 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	Conn Maciel Carey LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	46 contacts →
	Partial evidence “Conn Maciel Carey LLP is a boutique law firm focused on Labor & Employment, Workplace Safety - OSHA/MSHA, and Litigation.” Source: RevenueBase Database · checked Sep 28, 2026
9	Healthsperien LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	36 contacts →
	Partial evidence “Healthsperien, LLC is a nationally recognized, Washington, D.C.–based policy and health care consulting firm focused on strategic, regulatory, legislative, and implementation…” Source: RevenueBase Database · checked Sep 28, 2026
10	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
11	Werner Ahari Mangel LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	33 contacts →
	Strong evidence “WAM Law is a partnership of the insurance industry’s most recognized and sought-after lawyers.” Source: RevenueBase Database · checked Sep 28, 2026
12	Weiner Brodsky Kider PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	31 contacts →
	Indirect evidence “Weiner Brodsky Kider PC is a Washington, D.C-based firm with a national practice focused on compliance, regulatory, transactional and litigation matters related to financial…” Source: RevenueBase Database · checked Sep 28, 2026
13	Duncan, Weinberg, Genzer & Pembroke, P.C. Dwgp	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Source: RevenueBase Database · checked Sep 28, 2026
14	Slevin & Hart P.C	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “Slevin & Hart, P.C.” Source: RevenueBase Database · checked Sep 28, 2026
15	Liles Parker Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Strong 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
16	Wingfield, Ginsburg & Lipp, P.C	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “The Washington D.C.” Source: RevenueBase Database · checked Sep 28, 2026
17	TDY FGS Global	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “Tarplin, Downs & Young, LLC (TDY) opened its doors in 2006 and continues to be a leader in strategic consulting and policy development, with a specific focus on health care.” Source: RevenueBase Database · checked Sep 28, 2026
18	Eyman Partners, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial 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
19	Mills Black LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Strong 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
20	Miller Friel, Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Strong evidence “Miller Friel, PLLC is a specialized law firm with the sole and exclusive purpose of helping corporate clients maximize their insurance coverage.” Source: RevenueBase Database · checked Sep 28, 2026
21	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
22	Mcintyre & Lemon, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “McIntyre & Lemon, PLLC helps clients efficiently navigate the complex maze of federal and state laws and regulations.” Source: RevenueBase Database · checked Sep 28, 2026
23	Federal Health Policy Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Federal Health Policy (FHP) Strategies is a leading bipartisan government affairs consulting firm specializing in health care policy.” Source: RevenueBase Database · checked Sep 28, 2026
24	Artemis Policy Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Artemis Policy Group began in April 2020 and is a boutique health policy lobbying and association management firm, representing nonprofit organizations that promote health…” Source: RevenueBase Database · checked Sep 28, 2026
25	Diceros LAW	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Providing group health plan sponsors and fiduciaries sophisticated legal solutions to assure their plans’ fiscal integrity and regulatory compliance.” 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: health insurance 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 health insurance law firms.
Partial evidence: Its own public description names part of health insurance law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name health insurance 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 54 health insurance law firms based in Washington, United States

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Health insurance law firms based in Washington, United States at a glance

As of Sep 28, 2026

64.6%Verified-email coverage

66.6Average contacts per company

1-10Median 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 54 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 insurance 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 “health insurance 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 health insurance 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 health insurance 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, 2,322 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.

Health insurance 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 health insurance 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 health insurance law firms are there based in Washington, United States?

RevenueBase identified 54 health insurance 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 health insurance law firms?

New York leads the United States with 115 headquartered companies, followed by Chicago (104) and Houston (104). Washington has 54.

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 2,322 verified decision-maker contacts tracked across these 54 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.