Patients enrolled in Medicare Advantage plans tied to at least two major hospital systems lost in-network access after those providers severed contracts with private insurers, triggering federal intervention and forcing beneficiaries to choose between paying out of pocket or switching coverage under tight deadlines. In Delaware, Bayhealth ended its agreement with Cigna’s Medicare Advantage network, and in Maine, Northern Light Health terminated its contract with Humana effective Sept. 30, 2024. The Centers for Medicare and Medicaid Services responded by authorizing special election periods in both cases, but the disruptions exposed how quickly coverage gaps can materialize when hospitals and insurers fail to reach terms.
How contract terminations between hospitals and MA insurers hit patients first
When a hospital system drops out of a Medicare Advantage network, enrolled beneficiaries face an immediate problem: the doctors and facilities they relied on are no longer covered at in-network rates. That leaves patients paying higher costs for the same care or scrambling to find new providers, often with little advance warning.
In Delaware, state officials announced that Bayhealth’s departure from Cigna’s Medicare Advantage network met the federal definition of a “significant network change.” After reviewing the scope of the disruption, CMS concluded that affected beneficiaries qualified for a Special Election Period (SEP). That decision gave Cigna Medicare Advantage members a limited window to move into a different Medicare Advantage plan or return to Original Medicare outside the usual fall open enrollment.
The SEP carried another critical protection: beneficiaries who switched to Original Medicare were granted Medigap guaranteed issue rights. Under those rules, insurers selling Medicare Supplement policies cannot deny coverage or charge higher premiums based on preexisting conditions during the protected window. For older adults with chronic illnesses or recent hospitalizations, that distinction can determine whether a change in coverage is financially viable or effectively out of reach.
Delaware’s response also underscored the role of state-level communication in managing federal Medicare disruptions. Information on the SEP and consumer assistance was pushed through official state government channels, including insurance counseling programs that help seniors compare plan options. Even with that support, advocates reported confusion among patients who learned only at the point of care that their hospital was suddenly considered out of network.
In Maine, the fallout followed a similar pattern but unfolded over a larger geographic footprint. Northern Light Health, which operates hospitals and clinics across much of the state, ended its Humana Medicare Advantage contract effective Sept. 30, 2024. Maine’s entire federal congressional delegation, including Senator Angus King, formally urged CMS to open a special enrollment window for affected Humana enrollees. Their letter emphasized that beneficiaries had made plan choices based on long-standing relationships with Northern Light providers and should not bear the financial consequences of a private contract dispute.
For patients, the practical choices were stark. Staying with Humana meant paying out-of-network rates at Northern Light facilities or finding new in-network providers, sometimes far from home. Switching plans under a SEP required quickly navigating formularies, provider directories, and premium structures, all while ensuring continuity of care for ongoing treatments such as chemotherapy, dialysis, or post-surgical follow-up.
What CMS enrollment data reveals about the scale of disruption
The verified terminations in Delaware and Maine are documented through primary federal and state sources, but the broader claim that 41 hospital systems have dropped Medicare Advantage across 25 states lacks a single authoritative federal tally. CMS publishes detailed contract and enrollment files that show how many people are enrolled in each Medicare Advantage plan by state and county. Those datasets allow analysts to approximate the number of beneficiaries tied to a specific insurer in a given region, which is a starting point for estimating the impact of a hospital’s exit from a network.
However, the same federal data do not track individual hospital-insurer contract terminations or aggregate them into a national count. A hospital system can leave one insurer’s network, remain in others, and even rejoin later, all without triggering a discrete federal reporting category. As a result, national figures about how many health systems have dropped Medicare Advantage often rely on compilations from news reports, hospital statements, or advocacy groups rather than a centralized CMS database.
The gap between headline numbers and verifiable documentation matters for both policy and patient decision-making. Each confirmed termination, such as Bayhealth leaving Cigna or Northern Light Health leaving Humana, is traceable through government notices, official correspondence, or state press releases. Extrapolating from those examples to a sweeping national count risks obscuring important differences in scale, timing, and local mitigation efforts like SEPs or negotiated transition arrangements.
For beneficiaries, the lesson is less about the exact number of hospital systems involved and more about the underlying vulnerability: Medicare Advantage coverage is only as stable as the contracts that bind insurers and providers together. When those contracts unravel, patients can face abrupt and costly changes, even if federal and state officials move quickly to authorize special enrollment options. Policymakers, meanwhile, are left to weigh whether existing protections around network adequacy, notice requirements, and SEPs are sufficient, or whether additional safeguards are needed to keep seniors from being caught in the middle of private negotiations they cannot control.
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