Medicare for California retirees

Retiring in California does not always mean you enroll in Medicare the same week you leave work. Timing, employer size, and whether the coverage is from current work all matter. This is general education — not advice to drop or keep a specific retiree plan.

By Alan Blackwell, Licensed Medicare Insurance Agent 0M71640. Published September 15, 2026. Updated September 19, 2026.

Still working, or already retired

Those are different rules. If you or a spouse is still working, whether you can delay Part B is on The 7-month window and Still working at 65?. If you have already left the job, coverage from that employer is no longer current-employer coverage.

COBRA, an HSA, and retiree coverage

COBRA and some retiree plans can look like they replace Medicare. They often coordinate with it instead. An HSA contribution generally has to stop once any part of Medicare starts. Confirm with the plan sponsor and with Medicare.gov before you enroll or delay. COBRA vs Medicare at 65 and HSAs and Medicare Part A are the details.

After Parts A and B

The choice between Medicare Advantage and Original Medicare plus a Medicare Supplement (also called Medigap) is on Medicare Supplement vs Advantage. This page does not make that comparison.

Free counseling

For free Medicare counseling, call HICAP at 1-800-434-0222. The full note is on the Los Angeles County page.

My Medicare Checkup

Answer a few questions about your ZIP code, what matters about cost and doctors, and where you get care. The list shows the questions and items those answers raise. Confirm each one on Medicare.gov, with the plan, and with the doctor’s office.

You will get a list of questions to ask the office and items to confirm on Medicare.gov. You can also talk it through with Alan.

2026 figures

Medicare eligibility date

See when Part A and Part B can start at 65, and your Initial Enrollment window.

Read: Month by month around 65

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