Can I switch from Medicare Advantage to a Medigap plan any time?

Enrollment
Last updated: 
April 10, 2026
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The short answer

Not always. Outside of specific enrollment windows, switching from Medicare Advantage to a Medigap plan can be difficult because insurers can use medical underwriting to decline you in most states.

The full explanation

Medicare Advantage, sometimes called Part C, and Medigap are very different types of coverage. Medicare Advantage is offered by private insurers and replaces Original Medicare. Medigap supplements Original Medicare and helps pay costs like deductibles and copays. Switching between them isn't as simple as changing a phone plan.Here's the sticking point. When you first sign up for Medicare at 65, you have a Medigap open enrollment window, usually 6 months starting when you have Part B. During that window, insurers cannot turn you down or charge you more because of health conditions. Once that window closes, most states allow insurers to use medical underwriting, which means they can review your health history and either deny coverage or charge higher premiums.There are limited windows where you have guaranteed issue rights, meaning you can get Medigap coverage without underwriting. These include situations like losing employer coverage or your Medicare Advantage plan leaving the area. But simply changing your mind about Advantage versus Medigap, outside of those specific situations, doesn't automatically come with those protections.This is one reason the original choice at 65 matters so much. It's worth thinking carefully about which direction fits your health situation before that first enrollment window closes.

Related Medicare Resources

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In 

 specifically

Utah does not have additional state-level protections beyond federal guaranteed issue rights, so if you're past your initial enrollment window, approval for a Medigap plan from Utah carriers like SelectHealth or Regence will typically depend on your health history.

What this means for you

For you, this means if you're on Medicare Advantage and want to switch to Medigap, your health history may affect whether you can get coverage, so talking to an agent before that initial window closes is worth the time.

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