California Medigap policies supplement Original Medicare. To compare them, look at the standardized benefits, premium and your right to buy or replace coverage. California's birthday rule provides a specific protection for existing Medigap policyholders; it is not a general right to move from any insurance into Medigap.

How the birthday protection works
The California Department of Insurance describes a 60-day period following your birthday during which an existing Medigap policyholder can buy a new policy with the same or lesser benefits without medical screening or a new waiting period. Confirm the exact window and benefit comparison before applying.
A more expensive premium does not necessarily mean greater benefits. Compare the actual policy design. Ask the insurer to confirm that the proposed replacement qualifies rather than assuming every change between letters is protected.
Build your comparison
| Record | Why it matters |
|---|---|
| Current policy and riders | Establishes the existing benefits. |
| Replacement outline | Shows any benefit reduction or deductible change. |
| Written premium | Identifies discounts and the effective date. |
| Acceptance confirmation | Helps prevent a coverage gap. |
First-time buyers have different questions
The federal six-month Medigap Open Enrollment Period generally begins when you are at least 65 and enrolled in Part B. Other guaranteed-issue and state protections may apply. Review your own dates and notices instead of relying only on the annual Medicare Advantage enrollment calendar.
Use independent state assistance
California's Health Insurance Counseling and Advocacy Program, HICAP, can explain Medicare choices. Check an agent or insurer's license through the California Department of Insurance. Private insurance sellers are not official Medicare representatives.
These statewide considerations apply whether you live in Fair Oaks, Mendocino County or elsewhere in California. Obtain location-specific quotes and confirm acceptance before canceling an existing policy. Compare remaining costs as carefully as the monthly premium.
Related coverage questions
- How to Compare Medigap Policies
- Medigap Guaranteed Issue Rights: Eligibility, Deadlines and Proof
- UnitedHealthcare Medigap Rate Increases: How to Review Your Notice