Nearly 3 million Americans enrolled in Medicare Advantage plans are staring down an unwelcome chore for 2026: finding new coverage after insurers pulled plans or exited entire markets, cutting off familiar provider networks. The fallout is heaviest in rural counties and several smaller states, following years in which the private Medicare program mostly grew without major disruption. For many seniors, that calm is over, and the coming months will mean scrambling to secure prescriptions, specialists, and long-term care arrangements before coverage gaps open up.
Study: 1 In 10 Medicare Advantage Members Affected
According to a research letter published Feb. 18 in JAMA, roughly 2.9 million Medicare Advantage enrollees, about 10% of the program, faced “forced disenrollment” in 2026 when plans exited the market. The authors focused on HMO and PPO terminations and found that, after a period of relative stability, plan exits spiked. Rural beneficiaries experienced disruptions at roughly double the rate of their urban counterparts. The study warns that these involuntary moves can trigger abrupt network changes, altered drug coverage and interruptions to ongoing treatment.
Which Insurers And States Were Hit Hardest
National reporting on the analysis found that seven states had more than 40% of enrollees affected, including a staggering 92% of Medicare Advantage members in Vermont. As reported by Reuters, UnitedHealthcare accounted for nearly 14% of the disruptions, with CVS Health's Aetna and Elevance also among the largest contributors to plan terminations. The study also found that enrollees of smaller carriers represented about half of those who were forced to switch.
Insurers Cite Financial Pressure And Market Resets
Health plans say rising medical costs and changes in government payments made some markets unworkable, prompting carriers to scale back offerings after reporting shortfalls in 2025. UnitedHealth Group in particular has warned of substantial membership declines as part of a margin-recovery strategy, per reporting by Becker's Hospital Review. Policy analysts point out that the program’s concentration among a handful of large firms magnifies the practical impact when a major carrier withdraws from counties, as KFF documented in its 2026 plan preview.
What Policymakers And Experts Are Saying
In an editorial published alongside the research in JAMA, Hannah James of RAND wrote that “policymakers should consider whether the current program design adequately aligns plan incentives with beneficiary needs.” The editorial warns that abrupt plan exits can undermine continuity of care for older adults and people with disabilities and urges consideration of payment and risk-adjustment changes. That argument frames a larger debate over whether private plans should be steered differently by regulators or lawmakers.
How To Know If Your Coverage Is Affected
People notified that their plan is terminating are eligible for a Special Enrollment Period, and others can use the Medicare Advantage Open Enrollment Period from Jan. 1 through March 31 to pick a new plan or return to Original Medicare, according to the Medicare Rights Center. Consumers can compare options with tools such as the Medicare Plan Finder and find county-level changes and timelines in KFF. Officials urge beneficiaries to review Annual Notices of Change and contact local State Health Insurance Assistance Programs for free, personalized help.
The 2026 spike in forced disenrollments is a stark reminder that private Medicare plans can change quickly, and that the choices beneficiaries made last year may not hold through the next coverage period. For older Americans and the people who care for them, the immediate task is practical: read any mail from your plan, check the Plan Finder and, if needed, act during enrollment windows to avoid gaps in care.
