Millions of Medicare Advantage Members Could Lose Coverage Next Year — What to Know Before Dec. 31

Learning that a Medicare Advantage plan will end can cause immediate disruption and stress, especially if it affects access to primary care doctors, specialists, prescription coverage and extra benefits.

Private insurers are reducing their presence or leaving some regional markets altogether for 2027. A KFF analysis estimates that about 3.1 million Medicare Advantage enrollees will lose their current plans by the end of 2026, while 1.2 million people will see their standalone Medicare Part D drug coverage canceled. In all, 193 counties are expected to have no Medicare Advantage prescription drug plans available for general enrollment in 2027.

A non-renewal notice does not leave beneficiaries without choices. Knowing the key deadlines, coverage alternatives and federal protections can help prevent gaps in care and avoid costly penalties.

What to do if your Medicare Advantage plan is canceled for 2027

Do not ignore an official non-renewal notice from your insurer. Coverage under a plan that is not renewed ends on Dec. 31, 2026. Although the Centers for Medicare & Medicaid Services (CMS) provides a Non-Renewal Special Enrollment Period (SEP) that continues into early 2027, choosing a new plan before the end of the year is important to avoid a gap on Jan. 1.

Confirm the notice by signing in to Medicare.gov and checking which plans are still available in your ZIP code. After that, take these three steps:

1. Review your medical and prescription needs: Keep your non-renewal letter in a safe place; it serves as proof of creditable coverage. Write down your current monthly premium, out-of-pocket maximum, copays and every prescription you use regularly.
2. Compare replacement plans with Medicare Plan Finder: Do not focus only on a $0 premium. Use Medicare.gov to check whether your doctors, hospital network and medications are covered under the plan’s 2027 network and formulary.
3. Choose between a new Medicare Advantage plan and Original Medicare: If you enroll in another Medicare Advantage plan, your medical and drug coverage stay combined under private managed care. If you return to Original Medicare (Part A and Part B), you will need to choose a separate Part D drug plan and consider supplemental coverage.

If you do nothing, Medicare will automatically place you in Original Medicare on Jan. 1. Original Medicare does not include prescription drug coverage, dental or vision benefits, or an annual out-of-pocket cap, which can leave you responsible for 20% coinsurance and without pharmacy coverage.

Medicare Advantage non-renewal: your rights and options

When an insurer ends a plan or leaves a Medicare market, federal rules create consumer protections intended to keep enrollees from being left uninsured or blocked by health screening.

Outside protected enrollment periods, private insurers that sell Medicare Supplement Insurance, or Medigap, may use medical underwriting. That process can include reviewing health history, imposing waiting periods, increasing premiums or denying coverage because of conditions such as diabetes, cancer or heart disease.

If your Medicare Advantage plan ends, you gain a federal guaranteed-issue right to buy Medigap without medical underwriting. Under that protection, insurers cannot refuse to sell you a policy, limit your coverage or charge higher premiums because of your current health.

• Plan eligibility: Under standard federal rules, non-renewal gives access to certain standardized Medigap policies, most often Plans A, B, C, F, K or L, or Plans D and G depending on when you first qualified for Medicare. State laws differ, and some states provide broader rights that allow access to any Medigap plan sold locally.
• Enrollment timeline: Your guaranteed-issue window begins 60 days before your Medicare Advantage plan ends and continues for 63 days after coverage stops. Keep your termination letter to confirm eligibility with insurers.
• Part D penalty protections: If you return to Original Medicare, you must sign up for a standalone Part D prescription plan within 63 days of losing your Advantage coverage. Missing that deadline can trigger a permanent late-enrollment penalty added to your monthly drug premium for as long as you have Medicare.

Beneficiaries under age 65 who qualify for Medicare because of disability or end-stage renal disease face different rules, since guaranteed-issue protections do not always apply to younger enrollees.

Before choosing a carrier, contact your local State Health Insurance Assistance Program (SHIP) or state insurance department for free, personalized, unbiased guidance on which supplemental rights apply where you live.

Can you return to traditional Medicare if your Advantage plan ends?

Yes. If your Medicare Advantage plan is discontinued, you can switch back to Original Medicare (Part A and Part B).

That may appeal to people who want broader provider choice. In most cases, Original Medicare lets beneficiaries see any doctor or hospital in the country that accepts Medicare. But returning to Original Medicare requires careful planning because it does not cover all healthcare expenses.

You may need two additional policies:

• Medicare Part D (prescription drug coverage): Original Medicare does not cover outpatient drugs. You must enroll in a separate Part D plan to keep pharmacy benefits. Under the Inflation Reduction Act, annual out-of-pocket prescription costs under Part D are capped at $2,000, offering useful cost predictability for people managing chronic conditions.
• Medigap (Medicare Supplement Insurance): Original Medicare has no annual out-of-pocket maximum, so enrollees may still owe deductibles and an uncapped 20% coinsurance for Part B services. Medigap policies help cover some or all of those costs.

Medigap policies require monthly premiums, and the amount depends on the plan, insurer, location and other factors. CMS says Medigap is meant to complement Original Medicare by paying some costs Medicare does not cover.

When comparing options, review the premiums and out-of-pocket costs tied to Medicare Advantage against the costs of Part B, Part D and any Medigap policy.

Keep in mind that Original Medicare does not have a general annual cap on out-of-pocket spending for Part A and Part B services. A Medigap plan can help limit those expenses.

Deadlines and Special Enrollment Periods for plan changes

Anyone facing a plan cancellation must pay close attention to federal enrollment windows to avoid gaps in care or lifetime late-enrollment penalties.

Although Medicare’s standard Open Enrollment Period happens each fall, an insurer’s exit from a market opens a longer non-renewal Special Enrollment Period (SEP):

• Oct. 15 to Dec. 7, 2026 (standard Open Enrollment): You can compare replacement Medicare Advantage plans or return to Original Medicare and select a standalone Part D plan. Any choice made during this period begins on Jan. 1, 2027.
• Dec. 8 to Dec. 31, 2026 (non-renewal SEP, phase 1): The official non-renewal SEP begins. Selecting replacement coverage by Dec. 31 is important to make sure your new benefits, drug coverage and doctor access begin on Jan. 1 without interruption.
• Jan. 1, 2027 (plan expiration): The discontinued Medicare Advantage plan ends. If no replacement has been chosen, Medicare automatically moves you into Original Medicare without prescription drug coverage.
• Jan. 1 to Feb. 28, 2027 (non-renewal SEP, phase 2): If the Dec. 31 deadline passes, the non-renewal SEP remains available through the end of February. You can still enroll in another Medicare Advantage plan or add a standalone Part D policy.

Do not confuse this protection with Medicare Advantage Open Enrollment, which runs from Jan. 1 to Mar. 31 and applies only to people whose current plans remain active. To avoid drug coverage gaps and a possible Part D late-enrollment penalty, secure replacement coverage before the new year starts.

How to check whether your doctors accept a new Medicare plan

Choosing a replacement plan based only on a low premium can lead to serious provider problems. Before enrolling, make sure every doctor and facility in your care network participates in the plan.

Begin by listing every primary care physician, specialist, preferred facility and routine medication you depend on. Compare that list with the provider directory on Medicare.gov and the insurer’s website, and check your doctor’s exact office address and National Provider Identifier (NPI).

Online directories are often outdated. Call your doctor’s billing office and ask whether they participate in that specific plan’s network and product ID, not just whether they accept the insurance company in general. A practice may take an insurer’s commercial or PPO products but exclude its HMO Medicare Advantage plans. Also review the plan’s drug formulary to see which cost tier your medications fall into and whether your local pharmacy is a preferred network pharmacy.

As Healthcare Policy Analyst Anne Kamwila notes: “If you’re a senior in the USA, health insurance usually comes down to a fork in the road: Original Medicare or Medicare Advantage. Both can cover major medical needs, but they work in very different ways – and that difference shows up when you pick doctors, travel or get a surprise bill.”

Sorting through provider networks, drug tiers and supplemental rights can feel overwhelming, but beneficiaries do not have to handle it alone.

The State Health Insurance Assistance Program (SHIP) offers free, confidential one-on-one counseling. Funded by federal grants, SHIP counselors are local experts who do not earn sales commissions, do not sell insurance products and provide unbiased guidance based on your prescriptions and budget.

“Now is the time to take a good look at your coverage and make sure it meets your needs, allows you to see your doctors, and covers your medications,” said Ray Walker, a State Health Insurance Assistance Program director. “Reviewing your plan options and making any necessary changes early will ensure the continuation of your coverage.”

You can reach a local SHIP counselor by visiting shiphelp.org or calling 877-839-2675. Beneficiaries can also get assistance through the Medicare Rights Center or by calling 1-800-MEDICARE (1-800-633-4227).

Private insurance brokers can also compare options, but it is wise to confirm whether a broker represents every plan in your area or only a limited set of carriers. Be cautious of lead-generation websites and aggressive cold callers claiming to represent Medicare; these operations often collect and sell personal information to marketing companies.

Acting before the Dec. 31 deadline can help keep access to essential medication, trusted doctors and needed treatment uninterrupted in the new year.

Bottom line

You do not have to lose Medicare coverage if your Medicare Advantage plan is ending in 2027. You can switch to another Advantage plan or return to Original Medicare, with possible guaranteed-issue rights for Medigap. Review your doctors, medications, costs and enrollment dates, and use free SHIP counseling before making a decision.

Frequently Asked Questions

What is the final deadline to choose a replacement plan?

The standard Open Enrollment deadline for coverage beginning Jan. 1 is Dec. 7, 2026, but people whose plans are not renewed have a Special Enrollment Period through Feb. 28, 2027.

Where can I get unbiased help comparing my options?

Contact your free State Health Insurance Assistance Program (SHIP) through shiphelp.org or call 877-839-2675 for impartial Medicare counseling.