Does Losing Your Primary Care Doctor Create a Medicare Special Enrollment Period?

By Marc Gilman

Questions?

Call (800) 927-9326 or email

Key Takeaways

• Losing a doctor is not, by itself, a Special Enrollment Period (SEP).

• A significant network change may qualify, case by case. Medicare.gov states “significant change in your plan’s provider network” under exceptional circumstances that are “evaluated on a case-by-case basis,” and provides 2 months to switch. A CMS FAQ repeats the same: if CMS determines a provider termination is “significant,” affected members get an SEP.

• Your plan must tell you. Under that FAQ, plans must notify members when a contracted provider is terminated, whether or not an SEP applies.

• Don’t count on it. CMS makes the decision, and it isn’t automatic.

• The guaranteed windows for changing your Advantage plan are Annual Enrollment (Oct. 15 to Dec. 7) and, if you’re already in a Medicare Advantage plan, Open Enrollment (Jan. 1 to Mar. 31).*

Is Losing My Doctor a Qualifying Event?

Not on its own. Medicare.gov lists the situations that trigger a Special Enrollment Period for Medicare Advantage and Part D: moving, losing other coverage, a plan being sanctioned or terminated, a plan that isn’t renewed, a low star rating and a handful of others. A single doctor, or a primary care provider, leaving your plan’s network is not among them.

What About a Significant Change in the Network?

There is a narrower path. Medicare.gov includes “other exceptional circumstances,” which are “evaluated on a case-by-case basis,” and one example is when “you’re notified that there’s a significant change in your plan’s provider network.” Medicare.gov states that if it applies, you have 2 months to join or switch plans, thought timing varies by case, so confirm your window when you’re notified.

A CMS Q&A on Medicare Advantage special enrollment (hosted by the NAIC and issued in late 2024) fills in how this works:

• CMS decides, using an internal review. An SEP applies only if CMS determines that a provider termination is “significant.” The FAQ says CMS uses “a rigorous internal review process” that considers the circumstances of each case. It doesn’t matter whether the plan or the provider ended the contract.

• Your plan has to notify you. Plans must tell members about a contracted provider’s termination “regardless of whether they are eligible for an SEP,” and once CMS notifies the plan that an SEP applies, the plan must tell the affected members.

• There’s no set timeframe. The FAQ says there is “not a set timeframe in regulation,” and timing varies by case. Don’t rely on a specific number of months you see online.

• A smaller termination can still be a case. If the termination isn’t significant, you can ask for an SEP for exceptional circumstances where “access to services is compromised” and adverse health consequences would result. CMS decides case by case.

• How to ask. Members can call 1-800-MEDICARE to see if they might be eligible, and CMS reviews the details and documentation you provide. An eligible person can join another Medicare Advantage plan or return to Original Medicare.

• Older reporting is a reminder to push. KFF Health News reported in 2016 that some help-line staff said nothing could be done and that advocates helped members make their case. Keep notes on the date, the representative and what you were told.

Losing a single doctor is a harder case than losing a clinic or hospital system, but the exceptional-circumstances path exists for people whose access to care is genuinely compromised.

Is a broader rule coming? CMS proposed in its 2027 rulemaking to make an SEP available when any provider leaves a network, without requiring a “significant” finding. In the final rule published April 6, 2026, CMS said it is “not finalizing the proposal to establish a special enrollment period for provider terminations,” and that it will keep considering whether future rulemaking is appropriate. That means the current case-by-case approach still applies for 2027. Some summaries of the final rule you may see online say otherwise, so check the Federal Register text.

Dual-eligible members: If you have full Medicaid benefits along with Medicare, you have a separate monthly SEP to switch to a Dual-Eligible Special Needs Plan, which can be a more direct route than waiting for fall. We cover notice rules, continuity of care and Medigap rights in What Happens When Your Doctor or Hospital Leaves Your Medicare Advantage Network?

What Are the Windows I Can Count On?

If your doctor has left your plan’s network, Annual Enrollment starts in less than a week on October 15th.

What Should I Do If My Doctor Is Leaving My Plan?

1. Confirm it. Ask the doctor’s office which plans they accept for 2027, and check your plan’s provider directory. Directories can lag, so call the office.

2. Read your plan’s notices. Your Annual Notice of Change and any network letters describe what changes for next year.

3. Make a list. Write down your doctors, hospitals, specialists, medications and pharmacy.

4. Compare plans against that list. In Plan Compare on Medicare.gov, search by ZIP code, doctors and drugs.

5. Decide how much network matters to you. Medicare Advantage plans use networks, and referrals or prior authorization may apply. Original Medicare lets you use any provider that accepts Medicare, but you’d also need a Part D plan and, if you want help with cost sharing, a Medigap plan.

6. If you consider Medigap, ask about health questions. Outside a guaranteed-issue situation, insurers can ask health questions before approving you or setting the price.

7. Act before Dec. 7 if you can.* Changes during Annual Enrollment start Jan. 1.

*Some 2027 Medicare Advantage plans can set enrollment caps and may close to new members before Dec. 7, so starting early gives you more options.

Where Does Insurance Planning Fit In?

Network is one of the most common reasons people change plans, and it is easy to underestimate. We can check your doctors, hospitals and prescriptions against the plans available where you live and explain how Medicare Advantage and Original Medicare would work for you. If you’re still deciding between the two, see our guide to Medicare Advantage vs. Original Medicare.

What To Do Next

If your doctor is leaving your plan, or you’re not sure whether they’re in network for 2027, bring your list of doctors and medications and we’ll walk through your options before Dec. 7.

Questions? Call (800) 927-9326 or email

Prefer we reach out to you instead? Complete our Permission to Contact form and a licensed Gilman Agency agent will follow up.

Sources: Federal Register, “Medicare Program; Contract Year 2027 and Certain Contract Year 2026 Policy and Technical Changes” (April 6, 2026); Holland & Knight, “CMS Finalizes CY 2027 Medicare Advantage and Part D Rule” (April 7, 2026); Attac Consulting, “CMS 2027 Proposed Rule: New Provider Termination SEP” (Dec. 29, 2025); Gilman Agency, “What Happens When Your Doctor or Hospital Leaves Your Medicare Advantage Network?” (Aug. 21, 2026); CMS, Medicare Advantage Special Enrollment Period FAQ (hosted by the NAIC, file dated Nov. 2024); Medicare.gov, “Special Enrollment Periods” (Medicare Advantage and Part D); CMS, “Understanding Medicare Advantage & Medicare Drug Plan Enrollment Periods,” Product No. 11219 (March 2026); National Council on Aging, “Medicare Advantage Special Enrollment Periods” (July 7, 2026), “What Are the Medicare Special Enrollment Periods (SEPs)?” (July 20, 2026) and “Exceptional Circumstances for Medicare Special Enrollment Periods” (June 5, 2023); UnitedHealthcare, “What Is the Medicare Advantage Open Enrollment Period?”; Aetna, “Medicare Enrollment Periods: What to Know” (updated Oct. 1, 2026); KFF Health News, “When Medicare Advantage Drops Doctors, Some Members Can Switch Plans” (March 29, 2016).

Gilman Agency is not affiliated with or endorsed by Medicare or the federal government. This article is for general educational purposes and is not an offer of coverage or a recommendation of any specific plan. Special enrollment eligibility is determined by CMS and your plan, and enrollment rules, plan availability, benefits and networks change. We do not offer every plan available in your area. For more information, contact Marc Gilman, licensed insurance agent, at (800) 927-9326, or call 1-800-MEDICARE for a full list of your options.

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