Company lists · Data refreshed September 2026

Top 25 Medical malpractice insurance underwriters based in the United States

RevenueBase identified 163 company matches for medical malpractice insurance underwriters associated with the United States as of September 2026 and tracks 7,650 professional contacts across them, including 3,635 with verified work emails. New York is the largest hub.

This list covers company matches for medical malpractice insurance underwriters 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
163Companies
7,650Contacts tracked
3,635Verified emails
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The 25 largest medical malpractice insurance underwriters based in the United States

Ranked by team size
Top 25 of 163 company matches for medical malpractice insurance underwriters 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchFort Wayne, IN, United StatesHQ recorded Sep 17, 2026501-1,000980 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
2Exact matchNapa, CA, United StatesHQ recorded Sep 17, 2026501-1,000965 contacts →

Exact match

“Founded and led by physicians, The Doctors Company is committed to advancing, protecting, and rewarding the practice of good medicine.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact matchBirmingham, AL, United StatesHQ recorded Sep 17, 2026501-1,000738 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
4Exact matchAtlanta, GA, United StatesHQ recorded Sep 17, 2026201-500524 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
5Exact matchBoston, MA, United StatesHQ recorded Sep 17, 2026501-1,000516 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
6Exact matchAlamo, CA, United StatesHQ recorded Sep 17, 202651-200197 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
7Exact matchLos Angeles, CA, United StatesHQ recorded Sep 17, 202651-200157 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
8Exact matchSan Francisco, CA, United StatesHQ recorded Sep 17, 2026201-500148 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
9Exact matchMetairie, LA, United StatesHQ recorded Sep 17, 202651-200134 contacts →

Exact match

“LAMMICO is a mutual insurance company providing medical professional liability products and unparalleled customer service to healthcare providers and facilities.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10Exact matchSeattle, WA, United StatesHQ recorded Sep 17, 202651-200117 contacts →

Exact match

“We stake our reputation on protecting yours.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11Exact matchUnionville, CT, United StatesHQ recorded Sep 17, 202651-200103 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
12Exact matchChicago, IL, United StatesHQ recorded Sep 17, 2026201-500101 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
13Exact matchNew York, NY, United StatesHQ recorded Sep 17, 202651-200100 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
14Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 17, 202651-20090 contacts →

Exact match

“MGIS is a leading national insurance program manager experienced in building and managing specialized insurance programs for doctors.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15Exact matchPrinceton, NJ, United StatesHQ recorded Sep 17, 202651-20077 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
16Exact matchPhoenix, AZ, United StatesHQ recorded Sep 17, 202651-20073 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
17Exact matchOakland, CA, United StatesHQ recorded Sep 17, 202651-20071 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
18Exact matchChesterfield, MO, United StatesHQ recorded Sep 17, 202651-20065 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
19Exact matchWest Hartford, CT, United StatesHQ recorded Sep 17, 202611-5063 contacts →

Exact match

“Founded in 2020, Berkley Management Protection aims to disrupt the Management and Professional Liability marketplace by providing a new way to engage the market with talent, data…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20Exact matchChantilly, VA, United StatesHQ recorded Sep 17, 2026501-1,00052 contacts →

Exact match

“Created in 1979 by the healthcare technology industry, Medmarc’s mission is to be the superior provider of liability insurance protection and related risk management solutions to…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21Exact matchAlbany, NY, United StatesHQ recorded Sep 17, 202651-20045 contacts →

Exact match

“Berkley Alliance Managers offers innovative Professional Liability insurance coverage and risk management solutions.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22Exact matchOakland, CA, United StatesHQ recorded Sep 17, 202651-20043 contacts →

Exact match

“Dealey, Renton & Associates (DRA) has proudly served the needs of clients since 1950.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23Exact matchArlington, VA, United StatesHQ recorded Sep 17, 202611-5038 contacts →

Exact match

“Professional Risk Management Services specializes in medical professional liability insurance programs and claims and risk management services - on a bundled and unbundled basis -…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24Exact matchElmwood Park, IL, United StatesHQ recorded Sep 17, 202611-5037 contacts →

Exact match

“Since its founding in 1947, Cunningham Group has evolved to become the largest independent insurance agency in the nation, specializing in the delivery of innovative insurance and…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25Exact matchPortland, ME, United StatesHQ recorded Sep 17, 202611-5034 contacts →

Exact match

“Founded in 1978 by a group of 12 physicians, Medical Mutual provides medical professional liability insurance to physicians, hospitals, nursing homes and allied health facilities…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 25 of 163 medical malpractice insurance underwriters based in the United States

See the full list, filter by size, metro and specialty, and access 3,635 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Medical malpractice insurance underwriters based in the United States at a glance

As of Sep 17, 2026
47.5%Verified-email coverage
46.9Average contacts per company
11-50Median size (employees)
5.5%Largest-city concentration · New York
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
49
11-50
64
51-200
34
201-500
7
501-1,000
6
1,001-5,000
2

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 163 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 “medical malpractice insurance underwriters” 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 3,635 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 “medical malpractice insurance underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many medical malpractice insurance underwriters are there based in the United States?

RevenueBase identified 163 company matches for medical malpractice insurance underwriters 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 medical malpractice insurance underwriters?

New York leads with 9 company records, followed by Jacksonville (6) and Houston (5).

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 3,635 professional contacts with verified work emails tracked across these 163 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.

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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.