Company lists · Data refreshed September 2026

Top 19 Insurance law firms based in Washington, United States

RevenueBase identified 153 insurance law firms headquartered in Washington, United States as of September 2026 and tracks 11,546 professional contacts across them, including 6,032 with verified work emails. New York is the largest hub.

This list covers 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
153Companies
11,546Contacts tracked
6,032Verified emails
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The 19 largest insurance law firms based in Washington, United States

Ranked by team size
Top 19 of 153 insurance law firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names insurance law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Arnold & PorterIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 20261,001-5,0002,324

“Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.”

Source: company website · checked Sep 3, 2026
2
Venable LLPPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 20261,001-5,0001,791

“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: company website · checked Sep 3, 2026
3
Wiley Rein LLPIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 2026501-1,000576

“Founded in 1983, Wiley is a dominant presence in the nation’s capital.”

Source: company website · checked Sep 3, 2026
4
HausfeldIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 2026201-500267

“Hausfeld successfully resolves disputes for its clients, driven by its bold approach and pioneering experience.”

Source: company website · checked Sep 3, 2026
5Washington, DC, United StatesHQ checked Sep 3, 202651-200219

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

Source: company website · checked Sep 3, 2026
6Washington, DC, United StatesHQ checked Sep 3, 202651-200172

“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: company website · checked Sep 3, 2026
7
Jackson & Campbell, P.CPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 202651-200126

“For more than 130 years, Jackson & Campbell has been the law firm to which local, regional, and national businesses, associations, and Washingtonians turn for skilled and…”

Source: company website · checked Sep 3, 2026
8
Hollingsworth LLPIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 202651-200114

“Hollingsworth LLP is among the nation’s leading litigation firms.”

Source: company website · checked Sep 3, 2026
9
DOW LohnesIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 2026201-50073

“On January 1, 2014, Dow Lohnes merged with Cooley LLP.”

Source: company website · checked Sep 3, 2026
10
Reno & Cavanaugh, PllcPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 202651-20072

“Reno & Cavanaugh, PLLC (R&C), is a national law firm with offices in Washington, DC, Nashville, TN and Columbia, MD.”

Source: company website · checked Sep 3, 2026
11
HWG LLPPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 202651-20071

“HWG LLP is a boutique law firm designed to offer clients access to top tier legal talent without unnecessary overhead.”

Source: company website · checked Sep 3, 2026
12
Slocumb LAW Firm, LLCIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 202611-5068

“Experienced attorneys in Alabama, Georgia, Chicago, IL, Baltimore and Washington, DC When you have suffered serious injuries due to the negligence of another party, it is…”

Source: company website · checked Sep 3, 2026
13
Conn Maciel Carey LLPPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 202611-5044

“Conn Maciel Carey LLP is a boutique law firm focused on Labor & Employment, Workplace Safety - OSHA/MSHA, and Litigation.”

Source: company website · checked Sep 3, 2026
14
Peacock Keller, LLPPartial evidence
Washington, PA, United StatesHQ checked Sep 3, 202651-20038

“Peacock Keller is a full service law firm headquartered in Washington, Pennsylvania.”

Source: company website · checked Sep 3, 2026
15
Werner Ahari Mangel LLPStrong evidence
Washington, DC, United StatesHQ checked Sep 3, 202611-5036

“WAM Law is a partnership of the insurance industry’s most recognized and sought-after lawyers.”

Source: company website · checked Sep 3, 2026
16
Tiber Hudson LLCPartial evidence
Washington, DC, United StatesHQ checked Sep 3, 202611-5036

“Tiber Hudson LLC is a boutique law firm focused in providing legal services including complex commercial litigation, complex commercial transactions, corporate structure and…”

Source: company website · checked Sep 3, 2026
17Washington, DC, United StatesHQ checked Sep 3, 202611-5035

“O'Donoghue & O'Donoghue LLP is one of the largest and oldest union-side law firms in the United States, with offices in Washington, D.C, Philadelphia, Pennsylvania, and Annapolis…”

Source: company website · checked Sep 3, 2026
18
Weiner Brodsky Kider PCIndirect evidence
Washington, DC, United StatesHQ checked Sep 3, 202651-20031

“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: company website · checked Sep 3, 2026
19Washington, DC, United StatesHQ checked Sep 3, 202611-5030

“We practice advocacy-and only advocacy.”

Source: company website · checked Sep 3, 2026

Showing 19 of 153 insurance law firms based in Washington, United States

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Insurance law firms based in Washington, United States at a glance

As of Sep 3, 2026
1-10Median size (employees)
New YorkLargest hub · 778 HQs
Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
94
11-50
30
51-200
17
201-500
4
501-1,000
4
1,001-5,000
4

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 153 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 insurance law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “insurance law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among 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 an evidence 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, 6,032 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 3, 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.

Insurance law firms by metro in the United States

Frequently asked

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

RevenueBase identified 153 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?

Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.

Which city has the most insurance law firms?

New York leads with 778 headquartered companies, followed by Houston (524) and Chicago (492).

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 6,032 verified decision-maker contacts tracked across these 153 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 3, 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.