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Directory · Oregon · Medical malpractice

Who writes medical malpractice in Oregon

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

36 insurers are licensed for medical malpractice in Oregon on the regulator's list. Doctors Co. Group wrote the most in 2025 (16.6% of the state's premium).

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

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

The insurer groups that write the most medical malpractice in Oregon

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
1Doctors Co. Group$22.7M16.65%42%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
2Physicians Insurance A Mutual Group$21.3M15.66%80%Physicians Insurance A Mutual Company (C), Physicians Insurance Risk Retention Group, Inc.
3Berkshire Hathaway Group$15.5M11.37%92%GEICO General Insurance Company, GEICO Texas County Mutual Insurance Company, GEICO County Mutual Insurance Company, Government Employees Insurance Company
4Cna Insurance Group$15.4M11.31%—Continental Casualty Company, Continental Insurance Company, (The), American Casualty Company of Reading, Pennsylvania, National Fire Insurance Company of Hartford
5Mag Mutual Insurance Group$8.3M6.10%49%MAG Mutual Insurance Company, Professional Security Insurance Company, MD Advantage Insurance Company of New Jersey
6Curi Holdings Group$6.4M4.72%249%Medical Mutual Insurance Company of North Carolina, MMIC Insurance, Inc., Medical Security Insurance Company, UMIA Insurance, Inc.
7Liberty Mutual Group$5.5M4.02%—Safeco Insurance Company of America, Liberty Insurance Underwriters, Inc., Liberty Mutual Fire Insurance Company, Liberty County Mutual Insurance Company
8Wr Berkley Corporation Group$4.1M3.02%19%Berkley Assurance Company, Berkley National Insurance Company, Carolina Casualty Insurance Company, StarNet Insurance Company
9Coverys Group$3.7M2.68%125%Preferred Professional Insurance Company, ProSelect Insurance Company, Coverys Specialty Insurance Company, Coverys Risk Retention Group, Inc.
10Proassurance Corporation Group$3.2M2.35%42%NORCAL Insurance Company, ProAssurance Indemnity Company, Inc., ProAssurance Insurance Company of America, Allied Eastern Indemnity Company
Medical malpractice · Oregon

The companies

CompanyNAICHome stateStatus hereLines
Ace American Insurance Company22667PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +15 more
Allied World Assurance Company (U.S.) Inc.22730NHAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
American Casualty Company of Reading, Pennsylvania20427PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more
American Home Assurance Company19380NYAdmitted (licensed)Equipment breakdown, Commercial package (BOP, CMP), General liability +5 more
Aspen American Insurance Company43460TXAdmitted (licensed)Equipment breakdown, Commercial package (BOP, CMP), Earthquake +5 more
Beazley Insurance Company, Inc.37540CTAdmitted (licensed)Crime (burglary and theft), Fidelity bonds, General liability +3 more
Berkshire Hathaway Specialty Insurance Company22276NEAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more
Church Mutual Insurance Company, S. I.18767WIAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more
Cincinnati Casualty Company (The)28665OHAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +12 more
Cincinnati Indemnity Company (The)23280OHAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +9 more
Cincinnati Insurance Company (The)10677OHAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +13 more
Continental Casualty Company20443ILAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +12 more
Dentists Insurance Company (The)40975CAAdmitted (licensed)Commercial package (BOP, CMP), General liability, Medical malpractice +1 more
Doctors' Company (The), An Interinsurance Exchange, The Doctor's Management34495CAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Fair American Insurance and Reinsurance Company35157NYAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Fortress Assurance Corporation10801ILAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Great Divide Insurance Company25224NDAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +4 more
Hartford Fire Insurance Company19682CTAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +12 more
Liberty Insurance Underwriters, Inc.19917ILAdmitted (licensed)Inland marine, General liability, Medical malpractice +1 more
MAG Mutual Insurance Company42617GAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O) +1 more
Medical Mutual Insurance Company of North Carolina32522NCAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Medical Protective Company (The)11843INAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
MMIC Insurance, Inc.16942MNAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
National Union Fire Insurance Company of Pittsburgh, Pennsylvania19445PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +15 more
NCMIC Insurance Company15865IAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
NORCAL Insurance Company33200CAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Pharmacists Mutual Insurance Company13714IAAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +6 more
Physicians Insurance A Mutual Company (C)40738WAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Preferred Professional Insurance Company36234NEAdmitted (licensed)Personal auto, Commercial auto, General liability +2 more
ProAssurance Indemnity Company, Inc.33391ALAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
ProAssurance Insurance Company of America14460ILAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Professional Solutions Insurance Company11127IAAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
ProSelect Insurance Company10638NEAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
State Farm Fire and Casualty Company25143ILAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more
TDC National Assurance Company41050ORAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
UMIA Insurance, Inc.36676UTAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Turned down?

Last resort for medical malpractice in Oregon

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 Oregon insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = companies in Oregon DFR's 2025 market-share PDFs (property-casualty-totals.pdf plus the per-line PDFs linked from the financial-statements page). Some per-line PDFs (the life ones) still show 2024 data. Only insurers authorized in Oregon appear and companies with zero Oregon premium are excluded, so a licensed company that wrote nothing is missing. Names are NAIC short names (Ins Co, Amer, Natl). type comes from which reports list the company (Property & Casualty first, then Accident & Health, Life, Title); lines are the 'Line of Business' headers of the per-line PDFs the company appears in, spelled as published. since is not published. Surplus lines = SLAOR's eligible insurer listing (current names only; 78 former-name history rows and the 'MISCELLANEOUS - requires prior approval' placeholder dropped). It has no NAIC codes, domicile or eligibility dates, and none of its insurers appear in the DFR market-share PDFs, so naic is empty and must be filled by name in the merge. alien is a heuristic: foreign corporate suffix (Ltd/SE/AG/S.A./DAC/Club...), a US process-agent law firm as the address, or no US city/state/zip on file. "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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