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All Santa Clara programs

Medicare Supplement Insurance (Medigap)

Private insurance bought from an insurance company that helps pay costs Original Medicare does not cover. Screens Medi-Cal sale limits and California enrollment rights only; no quotes or recommendations.

Health coverage · Santa Clara County · Reviewed 2026-09-04

A directory listing, not an eligibility decision.

UniHealth can identify a possible match, but the responsible program makes the final decision.

What to know

Why it may fit
Your circumstances can be checked against the program’s published guidelines.
What to do next
Private insurance that helps pay costs Original Medicare (Part A and Part B) does not cover. You buy it from an insurance company. The choice is yours.
Who runs it
California Department of Insurance / carriers

What the program may consider

  • You are enrolled in Medicare Part B
  • No Medicaid or QMB sale prohibition
  • Open enrollment, guaranteed issue, or California Birthday Rule right
  • Current carrier availability and licensed review

How to get it

Private insurance that helps pay costs Original Medicare (Part A and Part B) does not cover. You buy it from an insurance company. The choice is yours.

Before you start

How to apply

Medigap application to an insurance company

You apply directly to the insurance company you choose. Medicare does not sell these policies.

Getting help

You start this yourself

You choose and sign your own application. A guardian, or someone with legal power over your affairs, may sign for you. HICAP gives free, unbiased help. You can check an agent's license with the state insurance department.

Only you, or someone with legal authority for you, can sign.

What happens after you apply

  1. Your strongest rights last 6 months. They start when you are 65 or older and have Part B. Then companies cannot turn you down because of your health.

    YouA helper can help with this

  2. You get a 6-month window after your Part B starts.

    If you are under 65 and have Medicare because of a disability

    YouA helper can help with this

  3. Each year you get 60 days, starting on your birthday, to switch policies. The new one must have the same or fewer benefits. No health questions are asked.

    If you already have a Medigap policy

    YouA helper can help with this

  4. Other events give you rights too. Examples are losing job or retiree coverage, or leaving a Medicare Advantage plan in your first year. Losing Medi-Cal because your income or savings went up also counts.

    YouA helper can help with this

  5. If you have Medi-Cal, companies generally cannot sell you a policy. There are a few exceptions.

    If you have Medi-Cal

    YouOnly you can do this

  6. You choose a policy and a company, then apply to that company. You sign the application.

    YouOnly you can do this

  7. The company reviews your application. Outside your protected windows, it may ask health questions and can say no.

    Your health plan

  8. The company sends your policy and its start date.

    Your health planOnly you can do this

What only you can do

  • Choose your own policy and company. HICAP can explain your options for free.
  • Sign the application yourself, or through your legal representative.
How long it takes
The company decides how fast. Ask when your coverage will start.
You are enrolled when
You are covered when the company sends your policy with a start date.
To keep it
Your policy keeps renewing as long as you keep paying for it. If you get Medi-Cal, you can pause the policy for up to 24 months. Tell the company within 90 days.

Can’t be combined with

Coming changes

  • Starting January 4, 2027: Some people who are not citizens lose Medicare on January 4, 2027. Citizens and green card holders keep it. So do Cuban or Haitian entrants and some Pacific island residents. Social Security writes first to people who will lose it.

Choosing a Medicare plan is your decision. UniHealth does not choose, recommend, or enroll anyone in Medicare plans. For free, unbiased help, call HICAP at 1-800-434-0222.