Plan Terminated? 2025 Medicare Advantage Exits Leave Real 2026 Options

When a Medicare Advantage plan exits a market — withdrawing from a county, terminating entirely, or consolidating into another product — the disruption can feel alarming. You have built relationships with doctors in that network, you know your copays, and suddenly you are being told to start over. The reassuring finding from KFF's analysis of 2025 plan terminations is that most affected beneficiaries are not being left without options. The data shows that the majority of people whose Medicare Advantage plans ended in 2025 have access to multiple replacement plans heading into 2026. But having options available and automatically landing in the right plan are two very different things, and understanding that gap is what matters most right now.

Medicare Advantage enrollment has grown dramatically over the past decade. More than half of all Medicare beneficiaries — roughly 33 million people as of 2025 — are now enrolled in a private Medicare Advantage plan rather than Original Medicare. That scale means when insurers make market decisions, the ripple effects touch hundreds of thousands of people at once. In 2024 and 2025, several major and regional insurers reduced their geographic footprints, citing reimbursement pressure from CMS benchmark rate adjustments and higher-than-expected medical utilization costs. The result was a meaningful wave of plan terminations that left beneficiaries scrambling during the Annual Enrollment Period that ran October 15 through December 7, 2024, for 2025 coverage — and again during the AEP that closed December 7, 2025, for 2026 coverage.

When your Medicare Advantage plan is terminated, you do not simply lose coverage and get stranded. CMS rules provide a Special Enrollment Period specifically for this situation. If your plan terminates mid-year or notifies you that it will not be available in the next plan year, you typically receive a 63-day window to enroll in a new Medicare Advantage plan or return to Original Medicare. If you return to Original Medicare, you also have the right to enroll in a standalone Part D prescription drug plan during that same 63-day window. This SEP is entirely separate from the standard Annual Enrollment Period, so even if you missed the October through December window, a plan termination gives you a second chance to make a coverage decision without late-enrollment penalties.

The KFF findings are meaningful precisely because they address the fear that plan terminations leave people with no good choices. In practice, the analysis found that most affected counties — including many rural and suburban markets that have historically had thinner plan competition — still had multiple Medicare Advantage options available for 2026. In urban and suburban markets, beneficiaries often had five or more plans to evaluate. Even in less competitive markets, the presence of two or three plans means you can compare premiums, out-of-pocket maximums, drug coverage, and provider networks rather than simply accepting whatever is available.

That said, multiple options existing does not mean your current benefits are preserved. This is the critical nuance. A replacement plan in the same county may carry a $0 monthly premium like your old plan, but it might also have a $5,500 annual out-of-pocket maximum instead of the $3,500 cap you were used to. It might cover your cardiologist but not your orthopedic surgeon. Its formulary might place your blood pressure medication on Tier 3 instead of Tier 2, costing you $45 per fill instead of $10 — a difference of $420 per year on a single drug. These differences compound. A plan that looks similar on the surface can cost a beneficiary managing multiple chronic conditions $800 to $1,500 more annually once you account for copays, coinsurance, and drug costs across a full year.

The Medicare Plan Finder tool at Medicare.gov is the most practical starting point for comparing replacement options. You enter your zip code, your specific prescription drugs and dosages, and your preferred doctors, and the tool generates a side-by-side comparison of plans available in your area — including estimated annual drug costs based on your actual medication list. This is not a generic estimate; it calculates costs using the formulary and tier structure of each specific plan. For 2026, pay particular attention to the Part D out-of-pocket cap. Under the Inflation Reduction Act changes that took effect in 2025 and continue in 2026, your annual out-of-pocket spending on covered Part D drugs is capped at $2,000. That cap applies to standalone Part D plans and to the drug benefit within Medicare Advantage plans that include drug coverage, known as MA-PD plans. Before this change, there was no hard cap on Part D spending, so this protection is significant for anyone taking high-cost specialty medications.

For beneficiaries returning to Original Medicare after a plan termination, there is a Medigap consideration that often gets overlooked. In most states, if you have been enrolled in Medicare Advantage and want to switch to a Medigap supplemental policy, insurers can use medical underwriting — meaning they can charge you more or deny coverage based on your health history. However, an involuntary plan termination may trigger federal guaranteed issue rights, allowing you to buy a Medigap policy without underwriting. Under federal rules, when your Medicare Advantage plan leaves your service area or stops offering coverage, you generally have the right to purchase Medigap Plans A, B, C, F, K, or L from any insurer in your state during a limited window. Plan F is only available to beneficiaries who became eligible for Medicare before January 1, 2020, but for those who qualify, it remains one of the most comprehensive options available. Contacting your State Health Insurance Assistance Program counselor — available free in every state — is the fastest way to confirm exactly which rights apply to your situation and which Medigap plans are accepting applicants in your area.

State-level protections add another layer of options for some beneficiaries. Thirteen states have what is known as a birthday rule, which gives Medigap enrollees a 30-day window around their birthday each year to switch to an equal or lesser Medigap plan without medical underwriting. Those states are California, Idaho, Illinois, Kentucky, Louisiana, Maine, Maryland, Missouri, Nevada, New Jersey, New York, Oklahoma, and Oregon. If you live in one of these states and a plan termination is prompting you to reconsider whether Medicare Advantage is still the right fit for your health situation, your birthday window may provide a path to Medigap that would not otherwise be available without health screening. This is especially worth exploring if you have developed new chronic conditions since you first enrolled in Medicare Advantage and would now face underwriting challenges in most states.

One practical step many beneficiaries skip is carefully reading the Annual Notice of Change, or ANOC, that Medicare Advantage plans are required to mail by September 30 each year. This document details every change to your plan for the coming year — premium shifts, formulary changes, network changes, and benefit modifications. If your plan is terminating, you will receive a separate termination notice, but the ANOC for any plan you are considering as a replacement is equally important reading. Plans are required to provide this document, and if you have not received it or cannot locate it, you can call the plan directly or access plan documents through Medicare Plan Finder. Reading the ANOC for a prospective plan before you enroll can prevent surprises — for example, discovering that a plan is dropping a hospital from its network on January 1, or moving a drug you take from Tier 2 to Tier 3 in the new plan year.

The broader policy context matters for understanding why these terminations happened and whether more are likely in coming years. CMS adjusts the benchmark payment rates it uses to pay Medicare Advantage insurers annually, and in recent years those adjustments — combined with changes to the risk adjustment model used to account for enrollee health status — have squeezed margins for some plans, particularly those serving higher-cost enrollees. Several large insurers publicly cited these payment pressures when announcing market exits in 2024 and 2025. CMS has indicated it monitors plan stability and access, and the agency has tools to require insurers to provide adequate notice and transition support when plans exit. But the fundamental tension between insurer profitability and beneficiary access is an ongoing policy dynamic. Beneficiaries in markets with only one or two remaining plans should be aware that their options could narrow further in future years if payment pressures continue, and that returning to Original Medicare with a Medigap supplement may offer more long-term stability in thin-competition markets.

For immediate action: if your plan was terminated for 2025 or you received notice of a 2026 termination, call 1-800-MEDICARE — that is 1-800-633-4227, available 24 hours a day, seven days a week — to confirm your Special Enrollment Period dates and get help using the Plan Finder. You can also contact your local SHIP program for free, unbiased one-on-one counseling; find your state's program at shiphelp.org. SHIP counselors are trained specifically to help beneficiaries compare plans and understand their rights, and they have no financial stake in which plan you choose. Given that the difference between a well-matched plan and a poorly matched one can easily reach $1,000 or more per year for someone managing multiple conditions, the hour or two spent with a SHIP counselor is among the highest-value uses of your time during any enrollment period. Do not wait until the last week of your SEP window — counselors get busy, and you want time to ask follow-up questions before your enrollment deadline.