Short answer: Usually, no. A letter saying your Medicare Advantage plan is ending generally means that particular private plan will no longer cover you. It usually does not take away your underlying eligibility for Medicare Part A and Part B.

What the letter may mean

Beneficiaries often call every coverage-ending notice a “cancellation letter,” but the reason matters. The insurer may not be renewing the plan, the plan may be leaving Medicare or your county, you may have moved outside the service area, your eligibility for a Special Needs Plan may have changed, or an individual enrollment issue may have occurred. Find the plan name, reason, effective date, enrollment deadline, and contact information in the notice. Keep the original letter because it may help prove Special Enrollment Period or Medigap rights.

What happens next?

If a plan contract is not renewed and you do not join another Medicare Advantage plan before it ends, Medicare says you will generally return to Original Medicare. That preserves Part A and Part B, but it may not preserve prescription, dental, vision, hearing, transportation, or other supplemental benefits. Your main options may be to join another Medicare Advantage plan or use Original Medicare, consider a stand-alone Part D plan, and investigate Medigap eligibility. The right choice depends on your doctors, prescriptions, finances, travel, and state-specific protections.

Five steps to take now

• Confirm why the plan is ending and the last day of coverage

• List your doctors, hospitals, prescriptions, pharmacies, and scheduled care.

• Compare replacement coverage before the deadline.

• Check whether you need separate Part D coverage or have Medigap guaranteed-issue rights.

• Confirm the effective date of any new plan in writing.

Frequently asked questions

Is a claim denial the same as plan cancellation? - No. A denial of a service, item, or drug does not necessarily end the entire plan. Follow the appeal instructions in the denial notice.

Can I change plans after December 7? - Possibly. A plan ending can create a Special Enrollment Period. The dates depend on why and when it ends.

Who can confirm the letter? - Call the number on your member card or 1-800-MEDICARE. Do not rely on an unsolicited caller.

Official resources - Medicare Special Enrollment Periods (https://www.medicare.gov/basics/get-started-with-medicare/get-more-coverage/joining-a-plan/special-enrollment-periods) · Medicare Plan Compare (https://www.medicare.gov/plan-compare/)