Major health insurers are pulling back from Medicare Advantage, forcing millions of older Americans to find new coverage in an already complicated insurance landscape.
Enrollment in Medicare Advantage had grown steadily for years, reaching more than 34 million Americans by 2025, drawn by promises of better benefits at lower costs.
Heading into 2026, however, that promise began to unravel as insurers started withdrawing from counties across the country at an accelerating pace.
Aetna announced it would pull approximately 90 Medicare Advantage plans across 34 states, representing one of the largest single-insurer retreats from the program in recent memory.
Humana is also withdrawing from certain markets, a move that could displace hundreds of thousands of older adults and force them to select entirely new Medicare Advantage plans.
Nearly 3 million Americans could ultimately be pushed out of their current plans and into traditional Medicare, according to a research letter published in JAMA.
One of the central drivers behind the pullback is reduced government funding, with reimbursement rates estimated to have fallen 20% from 2023 levels by 2026.
Insurers argue that declining payments from the federal government have made it increasingly difficult to sustain the richer benefit packages that made Medicare Advantage attractive to seniors in the first place.
The disruption is falling hardest on seniors in rural areas, where fewer plan alternatives exist and switching options are significantly more limited than in urban markets.
A JAMA study found that seniors facing forced disenrollment were nearly twice as likely to reside in rural communities, compounding an already serious access challenge.
Seniors affected by plan exits are typically given a special enrollment period, but navigating replacement coverage remains a stressful and confusing process for many older adults.
The withdrawals raise broader questions about the long-term stability of Medicare Advantage as a program and whether the federal funding structure can sustain its continued growth.
