Roughly one in ten Medicare Advantage enrollees face forced disenrollment in 2026, and seniors living in rural counties bear a sharply disproportionate share of that disruption. When an insurer pulls out of a county where it was the only option, every enrolled beneficiary in that area loses coverage at once, with few or no local alternatives to fall back on. The gap between rural and urban exposure to these exits has widened over nearly a decade, according to federal enrollment records and a peer-reviewed analysis of those records published in JAMA.
Thin rural markets amplify every insurer exit
The structural problem is straightforward. Many rural counties have only one or two Medicare Advantage contracts operating at any given time. When one of those insurers decides not to renew, the entire local enrollment base is forced out. In metropolitan areas, where five or more plans often compete, a single departure shifts some members but rarely leaves anyone without an alternative. Rural counties lack that buffer, so each non-renewal triggers a concentrated spike in disenrollment that does not register in national averages.
A Johns Hopkins Bloomberg School of Public Health research letter, peer-reviewed and published in JAMA, analyzed trends from 2018 through 2026 using federal data sources. The study estimated that one in ten Medicare Advantage enrollees face forced disenrollment in 2026. Rural beneficiaries drive much of that figure because their counties sit at the thin end of the market, where a single contract termination can eliminate all private Medicare options in a service area overnight.
Forced disenrollment is not a paperwork inconvenience. Seniors pushed out of a plan lose access to the specific drug formulary, provider network, and supplemental benefits they had been using. In rural areas, the nearest alternative plan may cover a different set of physicians or pharmacies, some of them hours away. For beneficiaries managing chronic conditions or complex medication regimens, an abrupt switch can delay prescriptions, interrupt specialist relationships, and generate out-of-pocket costs that were previously covered.
Federal data confirm the rural-urban gap in plan availability
The Johns Hopkins researchers built their analysis on CMS contract and enrollment files, the canonical federal repository that tracks every Medicare Advantage plan by county, enrollment count, and contract status. Those data show which counties gained or lost plans each year and how many beneficiaries were affected. The 2018 through 2026 time window captured a period of rapid Medicare Advantage growth nationally, but that growth was uneven. Urban and suburban markets attracted new entrants, while many rural counties saw flat or declining plan counts.
No direct CMS statement explains why insurers leave specific rural service areas, but the economics are well understood. Smaller enrollment pools generate less premium revenue to offset fixed administrative costs. Sparse provider networks make it harder to negotiate competitive reimbursement rates. And the population served tends to be older and sicker on average than urban enrollees, raising per-member medical spending. When an insurer’s margins thin, rural contracts are often the first to be dropped.
The result is a widening access gap. In some metropolitan counties, beneficiaries can choose among a dozen or more Medicare Advantage offerings with varying premiums, benefit designs, and provider networks. In contrast, a rural county may see its only plan exit and be left with no private Medicare option at all. Even where at least one plan remains, beneficiaries may be forced to move into a product with narrower networks, higher cost sharing, or fewer supplemental benefits such as dental and vision coverage.
Open questions about the 2026 disenrollment wave
Several gaps in the evidence make it difficult to predict how the 2026 disenrollment wave will play out on the ground. The JAMA analysis documents how many people will be pushed out of their plans but does not yet track what happens to them afterward. Some beneficiaries will likely return to traditional Medicare with or without a standalone Part D prescription drug plan. Others may find another Medicare Advantage plan in a neighboring county, if they are willing and able to travel farther for in-network care.
Another unresolved question is how state and federal safety-net programs will absorb displaced enrollees who struggle with new premiums or cost-sharing obligations. Low-income Medicare beneficiaries may qualify for Medicaid assistance with premiums and out-of-pocket expenses, but eligibility rules and benefits vary widely across states. The national Medicaid program sets broad parameters, while state agencies determine the details of income thresholds, asset tests, and coverage of services such as long-term care.
For seniors in rural areas, navigating that patchwork can be especially challenging. Local offices may be far away, broadband access limited, and community-based counselors stretched thin. Federal officials point beneficiaries and caregivers to online state-specific resources that explain how to apply for Medicaid or related savings programs, but those tools assume a level of digital literacy and connectivity that not all older adults possess. Researchers have not yet quantified how many beneficiaries pushed out of Medicare Advantage in 2026 will successfully connect with these supports.
Policy responses are also in flux. Some lawmakers have floated ideas such as strengthening rural plan benchmarks, offering targeted subsidies to encourage insurers to remain in sparsely populated counties, or tightening notice requirements when plans exit. Others have suggested expanding funding for counseling and enrollment assistance so that affected seniors can make informed choices during the transition. The Johns Hopkins analysis underscores that without deliberate intervention, market forces alone are unlikely to reverse the trajectory of rural plan exits.
What is clear from the available data is that the burden of instability is not evenly shared. Urban beneficiaries may feel the churn of annual benefit changes, but they rarely face the sudden disappearance of every local Medicare Advantage option. Rural seniors do. As the 2026 plan year approaches, the combination of thin markets, insurer retrenchment, and uneven safety-net access leaves many of those communities exposed to a level of coverage disruption that national averages obscure. Whether policymakers act on that warning will determine how many of the one in ten at risk will experience forced disenrollment as a temporary inconvenience-or as a lasting break in their access to care.
