Admitted and surplus lines medical malpractice insurance in California.

California physicians can buy coverage from an admitted insurer or a surplus lines insurer. The two markets have different rate rules and insolvency protection.

Admitted insurers use approved rates

An admitted carrier has a California license. Medical malpractice is among the property-and-casualty lines subject to California's Proposition 103 prior-approval rate system. The rate filings are public, but a filing does not state the premium or coverage for a particular physician.

Admitted insurers participate in the California Insurance Guarantee Association. If a member insurer becomes insolvent, CIGA may provide limited statutory protection for qualifying covered claims. It is not a substitute for reading the insurer's financial condition, policy terms, and the statute's exclusions.

Surplus lines insurers use different rules

A surplus lines insurer is nonadmitted in California. For most California placements, a licensed surplus lines broker must make a diligent search among admitted insurers that write the coverage before placing it with a nonadmitted insurer. California law includes a separate commercial-insured pathway, so ask the broker which placement rule applies to the actual practice.

Surplus-lines coverage does not use California's Proposition 103 prior-approval rate system. It remains subject to California's surplus-lines placement, eligibility, disclosure, tax, and claims-handling rules. The California Insurance Guarantee Association does not protect these policies.

Licensed insurers reported $450.3 million of California medical malpractice premium in 2025. The Doctors Company reported 42.4 percent. NORCAL reported 15.6 percent, and MIEC reported 7.0 percent. The state workbook excludes surplus lines, risk retention groups, captives, and self-insured programs.

A surplus-lines placement starts with the admitted market

The quote or broker's written explanation should identify the legal insurer shown on the declarations page, whether it is admitted or nonadmitted, the placement route, and the service, claims history, or other underwriting fact that produced it. A surplus-lines placement is not automatically inferior, but it changes the regulatory and insolvency-protection questions the physician must ask.

For a new nonadmitted policy, obtain and retain the required surplus-lines disclosure. California requires the applicant's signed disclosure in most new placements and requires the disclosure on the policy or certificate. It warns that the insurer is not California-licensed and that guarantee-fund protection is unavailable.

Read the full policy form. Compare occurrence versus claims-made structure, retroactive or prior-acts date, tail or extended-reporting terms, limits, exclusions, defense-cost treatment, consent-to-settle clause, claim definition, and whether the declared specialty, procedures, locations, telehealth work, and employed or contracted clinicians fit the terms. The actual issued policy, endorsements, and premium control. Read how defense costs can affect the policy limits.

Risk retention groups and captives are separate structures. They use different regulatory systems. Confirm the exact insurer and structure on every quote.

Check three facts on every quote

First, confirm the exact legal insurer on the declarations page and whether it is admitted in California. For a nonadmitted insurer, confirm the applicable eligible-carrier route rather than relying on a marketing group name.

Second, ask which placement rule and admitted-market search applied. The answer should identify the service, claims history, commercial-insured status, or other underwriting fact that matters.

Third, check the insurer's current financial-strength rating, rating date, outlook, and legal entity alongside the policy form. A rating is an opinion, not a guarantee of payment or coverage. This matters because CIGA does not protect a surplus-lines policy.

Surplus lines coverage can be the correct placement. Buy it only after you understand the insurer, policy form, exclusions, rate, and lack of guarantee association protection.