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Directory · Colorado · Medical malpractice

Who writes medical malpractice in Colorado

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

56 insurers are licensed for medical malpractice in Colorado on the regulator's list. Copic Group wrote the most in 2025 (39.7% of the state's premium).

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

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

The insurer groups that write the most medical malpractice in Colorado

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
1Copic Group$80.4M39.71%17%COPIC Insurance Company, COPIC, a Risk Retention Group
2Berkshire Hathaway Group$27.3M13.46%58%GEICO General Insurance Company, GEICO Texas County Mutual Insurance Company, GEICO County Mutual Insurance Company, Government Employees Insurance Company
3Doctors Co. Group$11.8M5.81%36%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
4Cna Insurance Group$9.7M4.77%5%Continental Casualty Company, Continental Insurance Company, (The), American Casualty Company of Reading, Pennsylvania, National Fire Insurance Company of Hartford
5Liberty Mutual Group$8.9M4.40%227%Safeco Insurance Company of America, Liberty Insurance Underwriters, Inc., Liberty Mutual Fire Insurance Company, Liberty County Mutual Insurance Company
6Vantage Risk Holdings Group$6.6M3.27%48%Vantage Risk Assurance Company, Vantage Risk Specialty Insurance Company
7Chubb Ltd Group$5.5M2.72%130%Federal Insurance Company, Ace American Insurance Company, Ace Property and Casualty Insurance Company, Chubb Lloyd's Insurance Company of Texas
8Health Care Industry Liability Reciprocal Insurance Company, A Risk Retention Group$5.4M2.67%54%—
9Coverys Group$3.9M1.93%—Preferred Professional Insurance Company, ProSelect Insurance Company, Coverys Specialty Insurance Company, Coverys Risk Retention Group, Inc.
10Fairfax Financial Group$3.1M1.53%41%United States Fire Insurance Company, Zenith Insurance Company, Hudson Insurance Company, North River Insurance Company (The)
Medical malpractice · Colorado

The companies

CompanyNAICHome stateStatus hereLines
Ace American Insurance Company22667PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +15 more
Ace Property and Casualty Insurance Company20699PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +11 more
Allied World Assurance Company (U.S.) Inc.22730NHAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +4 more
Allied World Specialty Insurance Company16624DEAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +11 more
American Alternative Insurance Corporation19720DEAdmitted (licensed)Aircraft and aviation, Personal auto, Commercial auto +12 more
American Association of Orthodontists Insurance Company (a RRG)10232AZAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
American Casualty Company of Reading, Pennsylvania20427PAAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +12 more
American Home Assurance Company19380NYAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +9 more
Aspen American Insurance Company43460TXAdmitted (licensed)Equipment breakdown, Commercial package (BOP, CMP), Earthquake +9 more
Atlantic Specialty Insurance Company27154NYAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +13 more
Beazley Insurance Company, Inc.37540CTAdmitted (licensed)Fidelity bonds, Inland marine, General liability +3 more
Berkley Assurance Company32603DEAdmitted (licensed)Personal auto, Crime (burglary and theft), Fidelity bonds +8 more
Berkshire Hathaway Specialty Insurance Company22276NEAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +11 more
CAMPMED CASUALTY \u0026 INDEMNITY COMPANY, INC.12260NHAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Capitol Indemnity Corporation10472WIAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 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 +11 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 +14 more
Continental Insurance Company, (The)35289PAAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +12 more
COPIC Insurance Company11860COAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
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) +1 more
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) +6 more
Great Midwest Insurance Company18694TXAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more
Greystone Insurance Company10019CTAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +6 more
Hartford Fire Insurance Company19682CTAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +13 more
Health Care Indemnity Incorporated35904COAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Hudson Insurance Company25054DEAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +10 more
Liberty Insurance Underwriters, Inc.19917ILAdmitted (licensed)Personal auto, Commercial auto, Fidelity bonds +4 more
MAG Mutual Insurance Company42617GAAdmitted (licensed)Commercial package (BOP, CMP), General liability, Medical malpractice +2 more
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)
Mutual Insurance Company Of Arizona32832AZAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
National Casualty Company11991OHAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +13 more
National Union Fire Insurance Company of Pittsburgh, Pennsylvania19445PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +16 more
Nationwide Mutual Insurance Company23787OHAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +14 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 +8 more
Philadelphia Indemnity Insurance Company18058PAAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more
Preferred Professional Insurance Company36234NEAdmitted (licensed)Personal auto, Commercial auto, Crime (burglary and theft) +3 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)
QBE Insurance (Europe) Limited39217PAAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +18 more
St. Paul Fire and Marine Insurance Company24767CTAdmitted (licensed)Aircraft and aviation, Personal auto, Commercial auto +12 more
St. Paul Mercury Insurance Company24791CTAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +10 more
State Farm Fire and Casualty Company25143ILAdmitted (licensed)Personal auto, Commercial auto, Commercial package (BOP, CMP) +10 more
TDC National Assurance Company41050ORAdmitted (licensed)General liability, Medical malpractice, Professional liability (E&O)
Travelers Indemnity Company (The)25658CTAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown +14 more
Truck Insurance Exchange21709CAAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +9 more
Zurich American Insurance Company16535NYAdmitted (licensed)Personal auto, Equipment breakdown, Commercial auto +14 more
Turned down?

Last resort for medical malpractice in Colorado

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 Colorado insurance regulator company list, read 2026-10-18 and the surplus lines list. ADMITTED = Colorado 2025 Insurance Industry Statistical Report (CY2024 data), sheet 'NAIC Companies' (every NAIC-coded company filing with the CO Division of Insurance, 1839 companies) joined to 'NAIC Companies Data' (type) and the 63 line-of-business sheets (lines written in CO + Lic flag). Lic flag per line sheet, consistent per company across sheets (0 conflicts): Y = licensed/admitted, S = surplus lines, N = not licensed, N/A = not applicable. Cross-check: 125/127 Lic=S companies are on the DOI eligible-nonadmitted PDF and 0 Lic=Y companies are. 'admitted' holds Lic=Y (1169) plus 281 companies that file with the CO DOI but wrote no CO premium in CY2024 (no Lic flag; lic='') and are not on the surplus PDF. 'not_admitted' (extra key, 456 rows, same row shape) holds Lic=S/N/N/A companies and no-premium companies that are on the surplus PDF. Row extras: lic (flag as given), group (NAIC group number stripped from the name). 'type' as given: Company Filing Statement Type / Business Type / Business Sub Type Statement Type: P = Property L = Life X = Health Business Type: F = Fraternal G = Other L = Life P = Property R = Risk T = Title X = Health Business Sub Type: HI = Hospital,Medical,Dental or Indemnity HM = Health Maintainance Org LH = Limited Health Service Org N = None PD = Prepaid Dental. Life/health/title companies are included (filter on type: first letter P = property/casualty statement, L = life, X = health; 'P/R/N' = risk retention group, 'T/T/N' = title). 'lines' = CO line-of-business sheets the company reported premium on in CY2024 (not lines of authority; a licensed company with no CO premium has lines=[]). 'since' is not in the source (left ''). Names are NAIC-style abbreviations. 74 companies appear in line sheets but not in the master list (mostly N/N/A). SURPLUS_LINES = DOI 'Colorado Eligible Nonadmitted Insurers Writing Surplus Lines' PDF, effective July 1, 2026, updated 9/16/26; 261 rows (227 NAIC-coded + 34 alien with AA- codes; naic='' and aa_code set for aliens). Colorado has no stamping office. PDF has no domicile column: domicile filled from the statistical report master list where the NAIC code matches (213 of 227). eligible = list effective date, not the insurer's first-eligible date. Prior-year reports: https://doi.colorado.gov/colorado-insurance-industry-statistical-report. "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.

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