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Directory · Missouri · Medical malpractice

Who writes medical malpractice in Missouri

From the Missouri company list; alphabetical, since Missouri doesn't publish every company's premium by line.

48 insurers are licensed for medical malpractice in Missouri on the regulator's list. Hospital Serv Group wrote the most in 2025 (27.3% of the state's premium).

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

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

The insurer groups that write the most medical malpractice in Missouri

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
1Hospital Serv Group$57.8M27.34%28%Medical Liab Alliance, Missouri Hospital Plan
2Berkshire Hathaway Group$34.9M16.54%75%GEICO General Insurance Company, GEICO Texas County Mutual Insurance Company, GEICO County Mutual Insurance Company, Government Employees Insurance Company
3Proassurance Corporation Group$15.1M7.13%—NORCAL Insurance Company, ProAssurance Indemnity Company, Inc., ProAssurance Insurance Company of America, Allied Eastern Indemnity Company
4Cna Insurance Group$9.9M4.69%35%Continental Casualty Company, Continental Insurance Company, (The), American Casualty Company of Reading, Pennsylvania, National Fire Insurance Company of Hartford
5Doctors Co. Group$8.9M4.24%39%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
6Liberty Mutual Group$8.2M3.87%—Safeco Insurance Company of America, Liberty Insurance Underwriters, Inc., Liberty Mutual Fire Insurance Company, Liberty County Mutual Insurance Company
7Curi Holdings Group$6.3M2.97%69%Medical Mutual Insurance Company of North Carolina, MMIC Insurance, Inc., Medical Security Insurance Company, UMIA Insurance, Inc.
8Keystone Mutual Insurance Company$5.0M2.37%43%—
9Mag Mutual Insurance Group$4.1M1.96%79%MAG Mutual Insurance Company, Professional Security Insurance Company, MD Advantage Insurance Company of New Jersey
10Applied Medico-Legal Solutions Risk Retention Group, Inc.$3.6M1.71%249%—
Medical malpractice · Missouri

The companies

CompanyNAICHome stateStatus hereLines
Ace American Insurance Company22667PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more
Allied World Assurance Company (U.S.) Inc.22730NHAdmitted (licensed)Personal auto, Commercial auto, Credit +2 more
American Alternative Insurance Corporation19720DEAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more
American Casualty Company of Reading, Pennsylvania20427PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more
American Home Assurance Company19380NYAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more
Aspen American Insurance Company43460TXAdmitted (licensed)Commercial package (BOP, CMP), Earthquake, Inland marine +3 more
Beazley Insurance Company, Inc.37540CTAdmitted (licensed)Fidelity bonds, Inland marine, General liability +3 more
Berkshire Hathaway Specialty Insurance Company22276NEAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more
CAMPMED CASUALTY \u0026 INDEMNITY COMPANY, INC.12260NHAdmitted (licensed)Medical malpractice
Church Mutual Insurance Company, S. I.18767WIAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more
Cincinnati Casualty Company (The)28665OHAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more
Cincinnati Indemnity Company (The)23280OHAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more
Cincinnati Insurance Company (The)10677OHAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more
Continental Casualty Company20443ILAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more
Doctors' Company (The), An Interinsurance Exchange, The Doctor's Management34495CAAdmitted (licensed)General liability, Medical malpractice
Fair American Insurance and Reinsurance Company35157NYAdmitted (licensed)Fidelity bonds, General liability, Medical malpractice +1 more
Fortress Assurance Corporation10801ILAdmitted (licensed)Medical malpractice
Great Divide Insurance Company25224NDAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +4 more
Hartford Fire Insurance Company19682CTAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more
Health Care Indemnity Incorporated35904COAdmitted (licensed)Medical malpractice
ISMIE Mutual Insurance Company32921ILAdmitted (licensed)General liability, Medical malpractice
KaMMCO Casualty Company, Inc.15735KSAdmitted (licensed)Medical malpractice
Kansas Medical Mutual Insurance Company34703KSAdmitted (licensed)General liability, Medical malpractice
Keystone Mutual Insurance Company13073MOAdmitted (licensed)Medical malpractice
Liberty Insurance Underwriters, Inc.19917ILAdmitted (licensed)Inland marine, General liability, Medical malpractice
MAG Mutual Insurance Company42617GAAdmitted (licensed)Medical malpractice, Workers' compensation
Medical Liab Alliance10686MOAdmitted (licensed)General liability, Medical malpractice
Medical Mutual Insurance Company of North Carolina32522NCAdmitted (licensed)Medical malpractice
Medical Protective Company (The)11843INAdmitted (licensed)General liability, Medical malpractice
Missouri Doctors Mutual Insurance Company11964MOAdmitted (licensed)Medical malpractice
Missouri Hospital Plan27642MOAdmitted (licensed)General liability, Medical malpractice
MMIC Insurance, Inc.16942MNAdmitted (licensed)General liability, Medical malpractice
National Union Fire Insurance Company of Pittsburgh, Pennsylvania19445PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more
NCMIC Insurance Company15865IAAdmitted (licensed)Medical malpractice
NORCAL Insurance Company33200CAAdmitted (licensed)Medical malpractice
Pharmacists Mutual Insurance Company13714IAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more
Philadelphia Indemnity Insurance Company18058PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more
Physicians Insurance Mutual13194MOAdmitted (licensed)Medical malpractice
Positive Physicians Insurance Company11863PAAdmitted (licensed)Medical malpractice
PracticeProtection Casualty Company12843FLAdmitted (licensed)Medical malpractice
Preferred Physicians Medical Risk Retention Group, a Mutual Insurance Company44083MOAdmitted (licensed)Medical malpractice
Preferred Professional Insurance Company36234NEAdmitted (licensed)Personal auto, Commercial auto, General liability +2 more
ProAssurance Indemnity Company, Inc.33391ALAdmitted (licensed)Medical malpractice
ProAssurance Insurance Company of America14460ILAdmitted (licensed)Medical malpractice
Professional Solutions Insurance Company11127IAAdmitted (licensed)General liability, Medical malpractice, Commercial property (fire and allied lines)
ProSelect Insurance Company10638NEAdmitted (licensed)General liability, Medical malpractice
State Farm Fire and Casualty Company25143ILAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more
State Volunteer Mutual Insurance Company33049TNAdmitted (licensed)Medical malpractice
Turned down?

Last resort for medical malpractice in Missouri

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 Missouri insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = every ACTIVE Missouri licensee (P&C, life, health, HMO, TPA, warranty, prepaid dental, etc.); filter on type. 'type' is the license Description from each company's detail page (e.g. 'Property and Casualty (Ch 379, RSMo)'); where a detail page was not read, type comes from Missouri market-share membership and is suffixed '(market share)'. 'lines' = lines of business with non-zero direct written premium in the 2025 Missouri market share report (licensed companies only). 'domicile' is only known for companies in the market share report. 'since' = Date Admitted from the detail page. Surplus lines list carries no NAIC code; naic filled by exact normalized-name match (naic_source says where), alien = domicile not a US state code. Detail-page crawl in progress; this file will be rewritten when it finishes. "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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