If your Medicare Advantage plan sent you a termination notice for 2025, you are not alone — and according to a detailed analysis by KFF (formerly the Kaiser Family Foundation), you are also not without options. The research found that the vast majority of beneficiaries whose plans were discontinued heading into 2026 live in counties where multiple Medicare Advantage plans remain available, often with comparable or improved benefits. That is genuinely good news, but it comes with an important asterisk: having options and knowing how to use them are two very different things.
Plan terminations in Medicare Advantage have become more common in recent years as insurers recalibrate their market footprints. Carriers including UnitedHealthcare, Humana, and several regional plans announced significant pullbacks in 2024 and 2025, citing rising medical costs, changes in federal payment benchmarks, and tighter profit margins. When a plan exits a service area, enrolled beneficiaries receive a notice — typically by October 1 — and are automatically enrolled in a comparable plan by their insurer if one is available, or returned to Original Medicare if no comparable plan exists. But automatic enrollment is rarely the best enrollment. It is simply the default.
The KFF analysis is significant because it quantifies what many beneficiaries feared: being stranded without coverage. The data shows that fear is largely unfounded in most parts of the country. In metropolitan and suburban counties, beneficiaries typically have access to a dozen or more Medicare Advantage plans in 2026, spanning HMO, PPO, and Special Needs Plan (SNP) structures. Even in rural counties — historically the most vulnerable to plan exits — the majority of affected beneficiaries have at least two or three alternatives available. That said, rural beneficiaries should be especially careful to verify that their specific physicians and hospitals are in-network for any new plan they consider, since rural provider networks tend to be thinner and less interchangeable.
When your plan is terminated, you receive a Special Enrollment Period (SEP) that allows you to switch to a new Medicare Advantage plan or return to Original Medicare — and if you return to Original Medicare, you can also join a standalone Part D prescription drug plan. This SEP typically runs from the date you receive your termination notice through February 28 of the following year, though the exact window can vary. Critically, this SEP is separate from the Annual Enrollment Period (AEP, October 15 through December 7) and the Open Enrollment Period (OEP, January 1 through March 31). You do not need to wait for a specific enrollment window — you can act as soon as you know your plan is ending.
The most important thing to compare when shopping replacement plans is not the monthly premium, even though that number tends to dominate people's attention. In 2026, many Medicare Advantage plans continue to offer $0 monthly premiums, which can make them look identical on the surface. The real cost differences live in the plan's out-of-pocket maximum, its copayments for specialist visits and hospital stays, and its drug formulary. A plan with a $0 premium but a $7,550 out-of-pocket maximum (the 2026 in-network cap set by CMS) is very different from a plan with a $45 monthly premium and a $3,500 cap — especially if you have ongoing health conditions that generate regular medical expenses. Run the numbers based on your actual usage, not the best-case scenario.
Prescription drug coverage deserves its own careful review. Medicare Advantage plans that include Part D drug coverage — called MA-PD plans — each maintain their own formulary, meaning the specific drugs they cover and the tier at which they cover them can differ dramatically. If you take a brand-name medication for a chronic condition like rheumatoid arthritis, diabetes, or heart failure, check whether your specific drug is on the new plan's formulary before you enroll. The Medicare Plan Finder tool at Medicare.gov allows you to enter your exact medications and dosages to compare estimated annual drug costs across plans side by side. This step alone can save beneficiaries hundreds or even thousands of dollars per year.
Provider network continuity is the other major variable that the premium price tag does not reveal. If you have an established relationship with a cardiologist, oncologist, or primary care physician, you need to verify — not assume — that they participate in any plan you are considering. HMO plans require you to use in-network providers for all non-emergency care, while PPO plans allow out-of-network care at a higher cost-share. If your doctors are not in an HMO's network, switching to that plan could mean either losing access to your care team or paying full out-of-network rates. Call your doctor's billing office directly and ask whether they are contracted with the specific plan — not just the insurer's brand name, because a carrier like Humana or Aetna may operate multiple distinct plan networks within the same county.
For beneficiaries who are considering returning to Original Medicare rather than selecting a new Medicare Advantage plan, there is an important Medigap consideration to understand. In most states, if you voluntarily leave Medicare Advantage, insurers can use medical underwriting to deny you a Medigap (Medicare Supplement) policy or charge you higher premiums based on your health history. However, if your plan was terminated — meaning you did not choose to leave — you may have guaranteed issue rights to purchase a Medigap policy without underwriting. Federal law provides this protection in specific circumstances, including plan terminations. Thirteen states go further with birthday rule protections — California, Idaho, Illinois, Kentucky, Louisiana, Maine, Maryland, Missouri, Nevada, New Jersey, New York, Oklahoma, and Oregon — giving residents an annual 30-day window to switch Medigap plans without medical underwriting regardless of health status.
If you are unsure where to start, your State Health Insurance Assistance Program (SHIP) offers free, unbiased counseling from trained volunteers who can walk you through plan comparisons without trying to sell you anything. SHIP counselors are available in every state and can help you use the Medicare Plan Finder, review your termination notice, and understand your enrollment rights. You can find your local SHIP contact through the Medicare.gov website or by calling 1-800-MEDICARE. This is not a generic suggestion — SHIP counselors regularly help beneficiaries identify plans that save them $500 to $2,000 or more annually compared to their automatic default enrollment, simply by doing a systematic comparison of the options available in their ZIP code.
The bottom line from the KFF research is reassuring but not a reason to be passive. Yes, most beneficiaries have good options. But the best option for your neighbor may be the wrong option for you, depending on your doctors, your medications, your budget, and how much you travel or split time between states. A plan termination is disruptive, but it is also a forced opportunity to reassess whether your coverage is actually optimized for your current health situation — and in many cases, beneficiaries who do that reassessment carefully end up in a better plan than the one that was terminated.
