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Directory · Wyoming · Medical malpractice

Who writes medical malpractice in Wyoming

Top insurer groups from the NAIC market share report; the state's list carries no lines of authority.

Curi Holdings Group wrote the most medical malpractice in Wyoming in 2025, $4.0M and 15.7% of the state's premium; the top five groups hold 72%. Wyoming's company list doesn't say which lines each company is licensed for, so the ranking below is the NAIC's top 10 groups; every licensed company is on the Wyoming page.

By Sam Alishahi, independent insurance broker · All lines in Wyoming

Top 10 · NAIC table: 11.1, 11.2 - Medical Professional Liability

The insurer groups that write the most medical malpractice in Wyoming

Top 10 insurer groups by direct premium written in 2025, from the NAIC's Market Share Reports for Property/Casualty Groups and Companies by State. A group is the parent and its insurance companies together; share is the group's part of the state total for the line; loss ratio is losses incurred over premium earned.

#Insurer groupPremium writtenShareLoss ratioMember companies here
1Curi Holdings Group$4.0M15.65%114%Medical Mutual Insurance Company of North Carolina, MMIC Insurance, Inc., Medical Security Insurance Company, UMIA Insurance, Inc.
2Mountain States Hlthcare Recip Rrg$3.9M15.00%38%—
3Doctors Co. Group$3.7M14.56%26%Doctors' Company (The), An Interinsurance Exchange, The Doctor's Management, TDC Specialty Insurance Company, TDC National Assurance Company, Doctors Company Risk Retention Group, A Reciprocal Exchange, The
4Copic Group$3.7M14.26%—COPIC Insurance Company, COPIC, a Risk Retention Group
5Berkshire Hathaway Group$3.2M12.45%55%GEICO General Insurance Company, GEICO Texas County Mutual Insurance Company, GEICO County Mutual Insurance Company, Government Employees Insurance Company
6Yellowstone Insurance Exch Rrg$1.3M5.22%——
7Cna Insurance Group$913,0003.55%35%Continental Casualty Company, Continental Insurance Company, (The), American Casualty Company of Reading, Pennsylvania, National Fire Insurance Company of Hartford
8Liberty Mutual Group$700,0002.73%18%Safeco Insurance Company of America, Liberty Insurance Underwriters, Inc., Liberty Mutual Fire Insurance Company, Liberty County Mutual Insurance Company
9Sompo Group$595,0002.32%85%American Agri-Business Insurance Company, Endurance Assurance Corporation, Endurance American Insurance Company, Sompo America Insurance Company
10Proassurance Corporation Group$476,0001.85%—NORCAL Insurance Company, ProAssurance Indemnity Company, Inc., ProAssurance Insurance Company of America, Allied Eastern Indemnity Company
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Last resort for medical malpractice in Wyoming

Last resortLinesWhereHow to get in
Surplus lines and Lloyd's open marketallall states, under each state's diligent-search rulesThrough surplus lines wholesalers; commercial property and liability have no guaranteed plan, so this is their last stepSource

Method and source

Source: the Wyoming insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = Wyoming DOI '2025 Property & Casualty AdHoc Com Data Statement Report - run date 06/11/2026' (Google Sheet linked from https://doi.wyo.gov/companies under Company Financial Information > 2025 Financial Summary Information > Property & Casualty*). It lists every company filing a P&C annual statement in Wyoming with its NAIC code and Wyoming direct premium; it is an NAIC ad hoc financial report, not a DOI-labelled 'licensed companies' list, so completeness as a licence roster is inferred (764 companies, 493 with WY premium > 0). P&C only (life, health and title have separate sheets); 'type' is set from the report title, not per row. No domicile, lines of authority or licence dates are given. Surplus lines: Wyoming publishes no eligibility list (https://doi.wyo.gov/companies/surplus-lines); U.S. nonadmitted insurers qualify under NRRA (authorized in domicile, >= $15M capital & surplus), alien insurers must be on the NAIC Quarterly Listing of Alien Insurers (Edition 252, July 1, 2026), read from the SLIP+ mirror because content.naic.org is behind a Cloudflare challenge. Rows carry the NAIC AIIN (e.g. AA-1344102) in 'aiin' with naic left '' (not a 5-digit cocode); 'country' holds the domicile country, 'domicile' is '' (not a U.S. state); 88 alien companies + 104 Lloyd's syndicates; 'eligible' is '' because the listing gives no admission dates; 'footnote' marks NAIC footnotes (3 = RiverStone, run-off, not eligible anywhere; 1 = Chubb Seguros Mexico, ineligible in TX; 4 = Cigna Global, travel medical only). "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.

Open to use. Cite "Alishahi Insurance insurance company directory" and link here. CSV · JSON.

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