Company lists · Data refreshed September 2026
Top 25 Medical malpractice insurance underwriters based in the United States
RevenueBase identified 163 medical malpractice insurance underwriters headquartered in 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 medical malpractice insurance underwriters 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 17, 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.
The 25 largest medical malpractice insurance underwriters based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 980 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 965 contacts → | ||||
Partial evidence “Founded and led by physicians, The Doctors Company is committed to advancing, protecting, and rewarding the practice of good medicine.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 738 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 524 contacts → | ||||
Partial evidence “MagMutual is a liability insurance provider and healthcare consultancy working to protect and support physicians and healthcare organizations.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 516 contacts → | ||||
Indirect evidence “With healthcare’s constant complexities and distractions, it can be difficult to focus on patients.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 197 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 157 contacts → | ||||
Partial evidence “The Cooperative of American Physicians, Inc.(CAP), established in 1975, offers superior medical professional liability coverage through the Mutual Protection Trust (MPT).” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 148 contacts → | ||||
Strong evidence “NORCAL Group, part of ProAssurance, offers a full spectrum of medical professional liability insurance solutions to physicians and other healthcare providers.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 134 contacts → | ||||
Strong evidence “LAMMICO is a mutual insurance company providing medical professional liability products and unparalleled customer service to healthcare providers and facilities.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 117 contacts → | ||||
Indirect evidence “We stake our reputation on protecting yours.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 103 contacts → | ||||
Indirect evidence “TDC Specialty serves as the E&S lines specialist within TDC Group.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 101 contacts → | ||||
Strong evidence “ISMIE Mutual is the leading medical liability insurance company in Illinois, offering coverage to health care professionals nationwide.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 100 contacts → | ||||
Strong evidence “MCIC Vermont (A Reciprocal Risk Retention Group)(MCIC) is a specialty insurance company which provides medical professional and general liability insurance coverage and risk…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 90 contacts → | ||||
Partial evidence “MGIS is a leading national insurance program manager experienced in building and managing specialized insurance programs for doctors.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 77 contacts → | ||||
Strong evidence “Princeton Insurance is New Jersey's leading medical professional liability insurance provider.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 73 contacts → | ||||
Strong evidence “Mutual Insurance Company of Arizona® (MICA) is a member-owned and physician-directed mutual insurance company focused on providing medical professional liability insurance.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 71 contacts → | ||||
Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 65 contacts → | ||||
Indirect evidence “Berkley Healthcare helps protect healthcare organizations and their executives against the professional, financial and reputational risks they face in today’s complex and changing…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 63 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 52 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 45 contacts → | ||||
Partial evidence “Berkley Alliance Managers offers innovative Professional Liability insurance coverage and risk management solutions.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 43 contacts → | ||||
Indirect evidence “Dealey, Renton & Associates (DRA) has proudly served the needs of clients since 1950.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 38 contacts → | ||||
Strong evidence “Professional Risk Management Services specializes in medical professional liability insurance programs and claims and risk management services - on a bundled and unbundled basis -…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 37 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 34 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
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: medical malpractice insurance underwriters. 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 medical malpractice insurance underwriters.
- Partial evidence
- Its own public description names part of medical malpractice insurance underwriters, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name medical malpractice insurance underwriters. 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 163 medical malpractice insurance underwriters based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,635 reachable decision-makers.
Free signup · no credit card
Medical malpractice insurance underwriters based in the United States at a glance
As of Sep 17, 2026Companies by employee count
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
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among medical malpractice insurance underwriters, 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 “medical malpractice insurance underwriters”. 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 medical malpractice insurance underwriters), 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 medical malpractice insurance underwriters, 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, 3,635 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 17, 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.
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 medical malpractice insurance underwriters, 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 medical malpractice insurance underwriters are there based in the United States?
RevenueBase identified 163 medical malpractice insurance underwriters 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?
Medpro Group, headquartered in Fort Wayne, tops this list with the largest team on record.
Which city has the most medical malpractice insurance underwriters?
New York leads with 9 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 3,635 verified decision-maker contacts tracked across these 163 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 17, 2026.
Ready to reach these companies? Verified emails and direct dials for all 163 medical malpractice insurance underwriters based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
Browse: Companies home · All United States lists · All Medical malpractice insurance underwriters 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 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States