A second straight year of Medicare Advantage retreat is taking shape, and this time the numbers are large enough to reshape open enrollment. Humana has confirmed it will exit plans covering roughly 600,000 members for 2027, and it is not alone; across the industry, an estimated nearly 3 million older Americans face forced disenrollment as carriers prune unprofitable plans. Non-renewal letters begin landing in September, well before the annual election period opens, giving affected retirees a narrow runway to find replacement coverage or fall back to traditional Medicare. The squeeze is being driven less by any one company than by a structural change in how Washington pays these plans.
Humana leads a second year of exits
Humana was the first major carrier to put a number on its 2027 pullback. On its July 29 earnings call, chief financial officer Celeste Mellet confirmed plan exits affecting roughly 600,000 members, framing the move as cutting what she called the lower tail of profitability rather than trimming benefits evenly across the portfolio. It is the company’s second consecutive year of market withdrawals; after its 2025 exits, Humana said it recaptured just over 40% of displaced members into its other plans and expects a similar recapture rate this time. At that rate, roughly 360,000 of the 600,000 members losing a plan would have to find coverage outside the company entirely, and the majority of affected members end up hunting elsewhere.
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Why the plans are disappearing
The retreat traces to money flowing the other direction. Federal policy changes aimed at clawing back years of Medicare Advantage overpayments have lowered the reimbursement rates the government pays insurers, and that cut is colliding with medical costs that keep climbing as members use more care. The result is a margin squeeze that has pushed carriers to either thin benefits or abandon markets outright. As Forbes health-care columnist Bruce Japsen reported in early August, the exits are escalating industry-wide rather than easing, with more carriers expected to announce cuts before the enrollment window opens.
The scale becomes clearer when the individual company decisions are added together. An analysis from researchers at the Johns Hopkins Bloomberg School of Public Health, cited by Yahoo Finance, found that roughly one in ten Medicare Advantage policyholders faces forced disenrollment this cycle, as many as 2.9 million people. The concentration is uneven. In a dozen states, more than one in five members are losing their plan, and in Vermont the analysis found 92% of Medicare Advantage policyholders forced to find another option, a near-total collapse of the market in that state.
What forced switchers actually face
A non-renewal notice does not leave a beneficiary uncovered, but it does force a decision under time pressure. Members who receive a plan-termination letter get a special enrollment period to choose a new Medicare Advantage plan or switch back to original Medicare, but the choices in a thinning market may be worse than what they had. Rural members are especially exposed; as Moneywise noted, insurer exits in less-populated areas can mean fewer plans, less competition, and higher out-of-pocket costs among whatever options remain.
The switch back to traditional Medicare carries its own trap. A retiree who left original Medicare years ago for an Advantage plan may no longer qualify for guaranteed-issue Medigap coverage, meaning a supplemental insurer can medically underwrite them and charge more, or decline them, based on health conditions. That makes the return to original Medicare cheaper on paper but potentially costly in practice for anyone who has developed a chronic condition since first enrolling. The people most likely to have their plan cut are often the ones for whom re-entering the traditional system is hardest.
Timing compounds the problem. The termination letters arrive in September, but the annual election period during which most beneficiaries can act runs from mid-October through early December, so affected members must absorb the news, compare a reshuffled slate of plans, and commit within weeks. For a population that skews older and less likely to shop coverage aggressively, the risk is inertia: doing nothing, defaulting into whatever the plan sponsor assigns, and discovering in January that a trusted doctor or a critical drug is no longer covered. The plans built their growth on convenience and low premiums; the 2027 exits are testing how durable that bargain is when the government stops overpaying for it.
The switch window, and the carriers still cutting
Members who lose a plan to non-renewal are not held to the standard October-to-December calendar. As 24/7 Wall St. detailed, a plan termination opens a special enrollment period that runs from December 8 through the end of February, giving affected beneficiaries extra weeks to line up replacement coverage after the general window closes. The catch is that the slate they choose from keeps shrinking, because Humana is not the only carrier retreating: UnitedHealthcare and CVS/Aetna, the other two of the three largest Medicare Advantage insurers, are also dropping plans and abandoning lower-density counties to protect their margins.
Inaction carries a specific penalty inside that reshuffle. A member who ignores the termination letter is not automatically moved into a comparable plan; instead the coverage lapses back to original Medicare with no drug plan attached, and picking up a standalone Part D plan late can trigger a permanent late-enrollment surcharge, calculated as roughly 1% of the national base drug premium for each month left uncovered and then added to the premium for as long as the person holds drug coverage. The combination of a compressed decision window, a thinner menu, and a default that strips away drug coverage is what turns a single non-renewal notice into a choice that can quietly raise a retiree’s costs for years.
This article was researched and drafted with the assistance of AI and reviewed by The Money Overview editorial team.
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