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Company lists · Data refreshed September 2026

Top 25 Insurance law firms based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 19,968 companies tracked

RevenueBase identified 19,968 insurance law firms headquartered in the United States as of September 2026 and tracks 362,791 professional contacts across them, including 194,807 with verified work emails and 186,649 with mobile numbers. New York is the largest hub.

This list covers insurance law firms headquartered in the 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
19,968Companies
362,791Contacts tracked
194,807Verified emails
186,649Mobile numbers
Unlock all 19,968 companies Free signup · no credit card · 500 free credits

The 25 largest insurance law firms based in the United States

Ranked by team size
Top 25 of 19,968 insurance law firms based in the 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
Alliant Insurance ServicesPartial evidence
Irvine, CA, United StatesHQ checked Sep 3, 202610001+6,035

“Alliant Insurance Services is among the top 5 largest and fastest-growing insurance brokerage and consulting firms in the United States.”

Source: company website · checked Sep 3, 2026
2
Lewis BrisboisPartial evidence
Los Angeles, CA, United StatesHQ checked Sep 3, 20261,001-5,0003,066

“Established in 1979, Lewis Brisbois Bisgaard & Smith LLP is a national, full-service law firm with more than 1,600 attorneys and 54 offices in 30 states and the District of…”

Source: company website · checked Sep 3, 2026
3
Gordon Rees Scully Mansukhani, LLPPartial evidence
San Francisco, CA, United StatesHQ checked Sep 3, 20261,001-5,0002,807

“As the only full-service law firm with offices and attorneys in all 50 states, Gordon Rees Scully Mansukhani delivers maximum value to our clients by combining the resources of a…”

Source: company website · checked Sep 3, 2026
4
Wilson ElserIndirect evidence
New York, IL, United StatesHQ checked Sep 3, 20261,001-5,0002,631

“Wilson Elser is the preeminent defense litigation firm in the United States.”

Source: company website · checked Sep 3, 2026
5
Husch BlackwellPartial evidence
20+ U.s. Offices, TX, United StatesHQ checked Sep 3, 20261,001-5,0002,516

“Husch Blackwell is a different kind of law firm–structured around our clients’ industries and built on a culture of selfless service.”

Source: company website · checked Sep 3, 2026
6
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
7
Jackson Lewis P.CPartial evidence
New York, KY, United StatesHQ checked Sep 3, 20261,001-5,0002,318

“Focused on employment and labor law since 1958, Jackson Lewis P.C.’s attorneys located in major cities nationwide consistently identify and respond to new ways workplace law…”

Source: company website · checked Sep 3, 2026
8
Seyfarth Shaw LLPIndirect evidence
Chicago, NC, United StatesHQ checked Sep 3, 20261,001-5,0002,176

“High stakes.”

Source: company website · checked Sep 3, 2026
9
FOX RothschildIndirect evidence
Philadelphia, FL, United StatesHQ checked Sep 3, 20261,001-5,0002,161

“With bold growth, Fox Rothschild brings together attorneys coast to coast.”

Source: company website · checked Sep 3, 2026
10
Dechert LLPPartial evidence
Philadelphia, PA, United StatesHQ checked Sep 3, 20261,001-5,0002,056

“Dechert is the law firm that helps business leaders lead.”

Source: company website · checked Sep 3, 2026
11
Nelson Mullins Riley & ScarboroughPartial evidence
Columbia, SC, United StatesHQ checked Sep 3, 20261,001-5,0002,036

“Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.”

Source: company website · checked Sep 3, 2026
12
Taft Stettinius & Hollister LLPIndirect evidence
Cincinnati, IN, United StatesHQ checked Sep 3, 20261,001-5,0001,963

“At Taft, we work as one team, driven and committed to helping you succeed.”

Source: company website · checked Sep 3, 2026
13
Debevoise & PlimptonPartial evidence
New York, NY, United StatesHQ checked Sep 3, 20261,001-5,0001,885

“Debevoise & Plimpton LLP is a premier law firm with market-leading practices, a global perspective and strong New York roots.”

Source: company website · checked Sep 3, 2026
14
Troutman Pepper Locke LLPIndirect evidence
United StatesHQ checked Sep 3, 20261,001-5,0001,867

“Troutman Pepper Locke LLP helps clients solve complex legal challenges and achieve their business goals in an ever-changing global economy.”

Source: company website · checked Sep 3, 2026
15
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
16
Ballard Spahr LLPPartial evidence
Philadelphia, DC, United StatesHQ checked Sep 3, 20261,001-5,0001,720

“Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.”

Source: company website · checked Sep 3, 2026
17
Dinsmore & Shohl LLPIndirect evidence
Cincinnati, OH, United StatesHQ checked Sep 3, 20261,001-5,0001,709

“Dinsmore & Shohl LLP has a nationwide team of more than 750 attorneys who are trusted advisers to Fortune 500 companies, institutions, associations, governments, professional…”

Source: company website · checked Sep 3, 2026
18
Fisher PhillipsIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 3, 2026501-1,0001,457

“With hundreds of attorneys across the globe, Fisher Phillips advises and advocates for employers internationally on some of the most complex and high-profile workplace matters.”

Source: company website · checked Sep 3, 2026
19
Bradley Arant Boult Cummings LLPPartial evidence
Birmingham, AL, United StatesHQ checked Sep 3, 2026501-1,0001,431

“Ranked in the Am Law 100, Bradley is a national law firm with a reputation for skilled legal work, exceptional client service, and impeccable integrity.”

Source: company website · checked Sep 3, 2026
20
Clark Hill LAWIndirect evidence
Detroit, MI, United StatesHQ checked Sep 3, 20261,001-5,0001,355

“At Clark Hill, our value proposition is simple.”

Source: company website · checked Sep 3, 2026
21
Quarles & Brady LLPIndirect evidence
Milwaukee, WI, United StatesHQ checked Sep 3, 20261,001-5,0001,333

“For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.”

Source: company website · checked Sep 3, 2026
22
Snell & WilmerPartial evidence
Phoenix, CA, United StatesHQ checked Sep 3, 2026501-1,0001,233

“Founded in 1938, Snell & Wilmer is a full-service business law firm with more than 500 lawyers practicing in 17 locations throughout the United States and in Mexico.”

Source: company website · checked Sep 3, 2026
23
Steptoe LLPIndirect evidence
Washington, TX, United StatesHQ checked Sep 3, 20261,001-5,0001,215

“In more than 100 years of practice, Steptoe* has earned an international reputation for vigorous representation of clients before governmental agencies, successful advocacy in…”

Source: company website · checked Sep 3, 2026
24
Buchanan Ingersoll & Rooney PCPartial evidence
Pittsburgh, PA, United StatesHQ checked Sep 3, 2026501-1,0001,204

“Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…”

Source: company website · checked Sep 3, 2026
25
Hinshaw & Culbertson LLPPartial evidence
Chicago, CA, United StatesHQ checked Sep 3, 2026501-1,0001,193

“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.”

Source: company website · checked Sep 3, 2026

Showing 25 of 19,968 insurance law firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 194,807 reachable decision-makers.

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Insurance law firms based in the United States at a glance

As of Sep 3, 2026
1-10Median size (employees)
New YorkLargest hub · 778 HQs
186,649Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
11,599
11-50
6,360
51-200
1,522
201-500
222
501-1,000
77
1,001-5,000
41
5,001-10,000
2
10001+
4

Verified emails by last verification

0–30
0
31–60
17,556
61–90
111,453
90–180
64,975
180+
823

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 the 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 United States 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, 194,807 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

Frequently asked

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

RevenueBase identified 19,968 insurance law firms headquartered in the 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?

Alliant Insurance Services, headquartered in Irvine, 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 194,807 verified decision-maker contacts tracked across these 19,968 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.

Ready to reach these companies? Verified emails and direct dials for all 19,968 insurance law firms based in the United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · All United States lists · All Insurance law firms lists · New lists

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.

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