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

Quick 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.

Detailed 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.

How This Applies in Utah

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.

Disclaimer

‍How Resting Sycamore Advisors Uses CMS Data

Our Commitment to Reliable Medicare Information

At Resting Sycamore Advisors, we work to provide accurate, current, and trustworthy information about Medicare Advantage, Medicare Part D, and Special Needs Plans.

To do that, we use data published by the Centers for Medicare & Medicaid Services (CMS), which is the official source for Medicare plan and enrollment information.

CMS Data Sources We Rely On

Our Medicare plan pages and comparison tools are powered by CMS datasets, including:

  • Medicare Advantage and Part D Landscape Files for annual plan availability and benefit details
  • Plan Benefits Package (PBP) Files for detailed benefit and coverage information
  • Part C and Part D Performance Data for quality ratings and plan performance measures
  • Monthly Enrollment Data for enrollment counts by contract, plan, state, and county

When possible, we link to the original CMS resources so you can review the source material directly.

How Often We Update Our Data

We follow the CMS release schedule and update our website as new data becomes available.

Annual Plan Year Updates (September)

We load new plan year Landscape and PBP files before the Medicare Annual Enrollment Period (October 15 through December 7). We also monitor CMS.gov for updates or revisions and refresh our content when needed.

Mid-Year Updates

We update enrollment and performance data as CMS publishes revised files, which are typically released monthly or quarterly.

Ongoing Maintenance

We routinely monitor CMS announcements for corrections, reissued files, or other changes and update our pages accordingly.

Each plan page includes a Last Accessed date so visitors can see when the source information was most recently reviewed.

How We Prepare CMS Data for Our Website

CMS data can be difficult to read in raw form. To make it easier to use, we format and organize the data for clarity.

This includes:

  • Standardizing plan identifiers such as contract ID, plan ID, and segment
  • Normalizing terminology so common Medicare terms are presented consistently
  • Organizing plan information by state, county, and ZIP code to match how people shop for coverage

All data values come from CMS. We do not change the underlying values beyond formatting, organization, and presentation.

Version Tracking and Transparency

We keep internal records of the CMS dataset versions used on our site.

Major Version History

  • Current Version: CY2025 Medicare Advantage and Part D Landscape Files (v1.0, published October 2025)
  • Prior Version: None. Resting Sycamore Advisors first began publishing structured Medicare plan information in March 2025

If CMS issues corrected or revised files, we update our website to reflect the latest available version.

Important Limitations

Please keep the following in mind:

  • CMS is the official source of truth. For enrollment and coverage decisions, always confirm details with Medicare.gov or 1-800-MEDICARE.
  • Data timing can vary. Enrollment and performance updates may appear on our website a few weeks after CMS publishes changes.
  • Plan details can change. Plan availability, costs, and benefits may change. Always verify current details directly with the plan provider.

Need Help From Official Medicare Resources?

For personalized Medicare assistance, please use these official resources:

  • Medicare.gov Help Center — https://www.medicare.gov
  • 1-800-MEDICARE (1-800-633-4227) TTY: 1-877-486-2048
  • State Health Insurance Assistance Program (SHIP) — free local counseling for Medicare beneficiariesIf you want, I can also give you a shorter legal-style version for a footer or /disclaimer page summary.