Company lists · Data refreshed September 2026

Top 25 Professional liability insurance companies based in the United States

Name: Professional liability insurance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 319 companies tracked

RevenueBase identified 319 company matches for professional liability insurance companies associated with the United States as of September 2026 and tracks 8,222 professional contacts across them, including 4,087 with verified work emails. Chicago is the largest hub.

This list covers company matches for professional liability insurance companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

319Companies

8,222Contacts tracked

4,087Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest professional liability insurance companies based in the United States

Ranked by team size

Top 25 of 319 company matches for professional liability insurance companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Medpro Group	Exact match	Fort Wayne, IN, United StatesHQ recorded Sep 17, 2026	501-1,000	980 contacts →
	Exact match “As the nation’s first provider of malpractice insurance, MedPro Group has served the healthcare community since 1899 – providing customized insurance and risk solutions across the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Proassurance	Exact match	Birmingham, AL, United StatesHQ recorded Sep 17, 2026	501-1,000	738 contacts →
	Exact match “Providing a Spectrum of Healthcare Liability and Other Insurance Solutions … and More ProAssurance’s group of insurance companies specializes in providing the full spectrum of…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Magmutual	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 2026	201-500	524 contacts →
	Exact match “MagMutual is a liability insurance provider and healthcare consultancy working to protect and support physicians and healthcare organizations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Coverys	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	501-1,000	516 contacts →
	Exact match “With healthcare’s constant complexities and distractions, it can be difficult to focus on patients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Mlmic Insurance Company	Exact match	Albany, NY, United StatesHQ recorded Sep 17, 2026	201-500	250 contacts →
	Exact match “No one knows NY better than MLMIC!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Beta Healthcare Group	Exact match	Alamo, CA, United StatesHQ recorded Sep 17, 2026	51-200	197 contacts →
	Exact match “BETA Healthcare Group (BETA) is the largest professional liability insurer of hospitals on the West Coast, providing coverage to more than 650 hospital and healthcare facility…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Cooperative Of American Physicians, INC	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 17, 2026	51-200	157 contacts →
	Exact match “The Cooperative of American Physicians, Inc.(CAP), established in 1975, offers superior medical professional liability coverage through the Mutual Protection Trust (MPT).” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Norcal Group	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	201-500	148 contacts →
	Exact match “NORCAL Group, part of ProAssurance, offers a full spectrum of medical professional liability insurance solutions to physicians and other healthcare providers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Martin Clearwater & Bell LLP	Exact match	New York, NY, United StatesHQ recorded Sep 17, 2026	201-500	144 contacts →
	Exact match “Martin Clearwater & Bell LLP, which has the distinction of being the oldest and largest medical defense firm in New York, has expanded over recent decades to specialize in all…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Berkley Select A Berkley Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	51-200	130 contacts →
	Exact match “Berkley Select is a leading provider of professional liability insurance products across a full spectrum of disciplines and industries, for clients of virtually every size and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	ALAS	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	51-200	128 contacts →
	Exact match “Attorneys' Liability Assurance Society (ALAS) was founded by its owner-insured law firms to provide a superior source of insurance coverage along with a level of service that…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Physicians Insurance A Mutual Company	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	51-200	117 contacts →
	Exact match “We stake our reputation on protecting yours.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Camico	Exact match	San Mateo, CA, United StatesHQ recorded Sep 17, 2026	51-200	115 contacts →
	Exact match “CAMICO was founded by CPAs in the 1980s, introducing a new way of approaching Accountants’ Professional Liability Insurance that focuses on helping firms reduce their malpractice…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	TDC Specialty Tdcsu	Exact match	Unionville, CT, United StatesHQ recorded Sep 17, 2026	51-200	103 contacts →
	Exact match “TDC Specialty serves as the E&S lines specialist within TDC Group.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Ismie Mutual Insurance Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	201-500	101 contacts →
	Exact match “ISMIE Mutual is the leading medical liability insurance company in Illinois, offering coverage to health care professionals nationwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Mcic Vermont, LLC	Exact match	New York, NY, United StatesHQ recorded Sep 17, 2026	51-200	100 contacts →
	Exact match “MCIC Vermont (A Reciprocal Risk Retention Group)(MCIC) is a specialty insurance company which provides medical professional and general liability insurance coverage and risk…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Alps Lawyers Malpractice Insurance & LAW Firm Insurance	Exact match	Missoula, MT, United StatesHQ recorded Sep 17, 2026	51-200	89 contacts →
	Exact match “ALPS is law firm insurance made easy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	PICA	Exact match	Birmingham, AL, United StatesHQ recorded Sep 17, 2026	51-200	88 contacts →
	Exact match “Podiatry Insurance Company of America (PICA), a ProAssurance company is the nation's leading provider of professional liability insurance for podiatric physicians in the U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Medical Mutual Liability Insurance Society Of Maryland	Exact match	Hunt Valley, MD, United StatesHQ recorded Sep 17, 2026	51-200	78 contacts →
	Exact match “MEDICAL MUTUAL was created for Maryland Physicians and is owned and directed by Maryland Physicians.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Princeton Insurance Company	Exact match	Princeton, NJ, United StatesHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “Princeton Insurance is New Jersey's leading medical professional liability insurance provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Kelly, Trotter & Franzen	Exact match	Long Beach, CA, United StatesHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “CKT & F was established in 1994 in Long Beach, California and specializes in professional liability defense.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	MICA	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 17, 2026	51-200	73 contacts →
	Exact match “Mutual Insurance Company of Arizona® (MICA) is a member-owned and physician-directed mutual insurance company focused on providing medical professional liability insurance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	MIEC	Exact match	Oakland, CA, United StatesHQ recorded Sep 17, 2026	51-200	71 contacts →
	Exact match “MIEC was founded in 1975 in the depths of the malpractice crisis by physicians and their medical societies when insurance was largely unavailable to the healthcare community.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Apogee Insurance Group, A Berkshire Hathaway Company	Exact match	Wayne, PA, United StatesHQ recorded Sep 17, 2026	51-200	66 contacts →
	Exact match “Apogee Insurance Group is a Berkshire Hathaway specialty broker focused on Professional (E&O), Management (D&O, EPL, Crime, and Fiduciary), Cyber, and Pollution Liability risks.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Berkley Healthcare A Berkley Company	Exact match	Chesterfield, MO, United StatesHQ recorded Sep 17, 2026	51-200	65 contacts →
	Exact match “Berkley Healthcare helps protect healthcare organizations and their executives against the professional, financial and reputational risks they face in today’s complex and changing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “professional liability insurance companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 319 professional liability insurance companies based in the United States

See the full list, filter by size, metro and specialty, and access 4,087 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Professional liability insurance companies based in the United States at a glance

As of Sep 17, 2026

49.7%Verified-email coverage

25.8Average contacts per company

11-50Median size (employees)

3.1%Largest-city concentration · Chicago

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

121

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 319 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “professional liability insurance companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,087 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional liability insurance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional liability insurance companies are there based in the United States?

RevenueBase identified 319 company matches for professional liability insurance companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Medpro Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most professional liability insurance companies?

Chicago leads with 10 company records, followed by New York (9) and Tampa (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,087 professional contacts with verified work emails tracked across these 319 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 319 professional liability insurance companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Professional liability insurance companies by geography

Professional liability insurance companies based in France

Browse the directory

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.