Company lists · Data refreshed September 2026

Top 25 Insurance law firms based in the United States

Name: Insurance law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

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, its RevenueBase Smart Search rating, 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 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 3, 2026 86% judged on-target in blind review

19,968Companies

362,791Contacts tracked

194,807Verified emails

186,649Mobile numbers

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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. RevenueBase Smart Search rates how each company's information relates to 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	Alliant Insurance Services	Partial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	10001+	6,035 contacts →
	Partial evidence “Alliant Insurance Services is among the top 5 largest and fastest-growing insurance brokerage and consulting firms in the United States.” Source: RevenueBase Database · checked Sep 3, 2026
2	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	3,066 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
3	Gordon Rees Scully Mansukhani, LLP	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,807 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
4	Wilson Elser	Indirect evidence	New York, IL, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,631 contacts →
	Indirect evidence “Wilson Elser is the preeminent defense litigation firm in the United States.” Source: RevenueBase Database · checked Sep 3, 2026
5	Husch Blackwell	Partial evidence	20+ U.s. Offices, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,516 contacts →
	Partial evidence “Husch Blackwell is a different kind of law firm–structured around our clients’ industries and built on a culture of selfless service.” Source: RevenueBase Database · checked Sep 3, 2026
6	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,324 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 3, 2026
7	Jackson Lewis P.C	Partial evidence	New York, KY, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,318 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
8	Seyfarth Shaw LLP	Indirect evidence	Chicago, NC, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,176 contacts →
	Indirect evidence “High stakes.” Source: RevenueBase Database · checked Sep 3, 2026
9	FOX Rothschild	Indirect evidence	Philadelphia, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,161 contacts →
	Indirect evidence “With bold growth, Fox Rothschild brings together attorneys coast to coast.” Source: RevenueBase Database · checked Sep 3, 2026
10	Dechert LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,056 contacts →
	Partial evidence “Dechert is the law firm that helps business leaders lead.” Source: RevenueBase Database · checked Sep 3, 2026
11	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,036 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
12	Taft Stettinius & Hollister LLP	Indirect evidence	Cincinnati, IN, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,963 contacts →
	Indirect evidence “At Taft, we work as one team, driven and committed to helping you succeed.” Source: RevenueBase Database · checked Sep 3, 2026
13	Debevoise & Plimpton	Partial evidence	New York, NY, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,885 contacts →
	Partial evidence “Debevoise & Plimpton LLP is a premier law firm with market-leading practices, a global perspective and strong New York roots.” Source: RevenueBase Database · checked Sep 3, 2026
14	Troutman Pepper Locke LLP	Indirect evidence	United StatesHQ checked Sep 3, 2026	1,001-5,000	1,867 contacts →
	Indirect evidence “Troutman Pepper Locke LLP helps clients solve complex legal challenges and achieve their business goals in an ever-changing global economy.” Source: RevenueBase Database · checked Sep 3, 2026
15	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,791 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 3, 2026
16	Ballard Spahr LLP	Partial evidence	Philadelphia, DC, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,720 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 3, 2026
17	Dinsmore & Shohl LLP	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,709 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 3, 2026
18	Fisher Phillips	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 3, 2026	501-1,000	1,457 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 3, 2026
19	Bradley Arant Boult Cummings LLP	Partial evidence	Birmingham, AL, United StatesHQ checked Sep 3, 2026	501-1,000	1,431 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
20	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,355 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 3, 2026
21	Quarles & Brady LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,333 contacts →
	Indirect evidence “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Source: RevenueBase Database · checked Sep 3, 2026
22	Snell & Wilmer	Partial evidence	Phoenix, CA, United StatesHQ checked Sep 3, 2026	501-1,000	1,233 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
23	Steptoe LLP	Indirect evidence	Washington, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,215 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 3, 2026
24	Buchanan Ingersoll & Rooney PC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 3, 2026	501-1,000	1,204 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
25	Hinshaw & Culbertson LLP	Partial evidence	Chicago, CA, United StatesHQ checked Sep 3, 2026	501-1,000	1,193 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 3, 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: 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 insurance law firms.
Partial evidence: Its own public description names part of 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 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 19,968 insurance law firms based in the United States

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Insurance law firms based in the United States at a glance

As of Sep 3, 2026

53.7%Verified-email coverage

51.4%Mobile-number coverage

18.2Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · New York

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

11,599

11-50

6,360

51-200

1,522

201-500

222

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

17,55631–60

111,45361–90

64,97590–180

823180+

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 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 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.
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 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 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 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, 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

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 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 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.

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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.