Berlin – A growing number of Medicare Advantage beneficiaries are facing unexpected disruptions to their healthcare coverage as insurers increasingly exit markets across the United States. A recent study published in JAMA reveals a significant surge in forced disenrollments, leaving millions of seniors and individuals with disabilities scrambling to find new health plans or revert to traditional Medicare. This trend is fueled by financial pressures on Medicare Advantage plans, driven by rising medical costs and evolving regulatory landscapes.
Medicare Advantage (MA), a program allowing private insurers to administer Medicare benefits, has become increasingly popular over the past two decades. As of 2025, more than half – 54% – of eligible Medicare beneficiaries, totaling nearly 35.5 million people, are enrolled in these plans, according to data from the Kaiser Family Foundation (KFF). However, this growth has not been without its challenges. Insurers are grappling with increased medical spending and changes to Medicare payment policies, leading some to reassess their participation in the program.
Rising Disenrollment Rates and Market Exits
The JAMA study highlights a concerning trend: forced disenrollments, where beneficiaries are automatically removed from a plan because the insurer has stopped operating in their area, have risen dramatically. From an average of just 1% between 2018 and 2024, the rate jumped to nearly 7% in 2025 and is projected to reach 10% in 2026. This means a substantial portion of the Medicare Advantage population will be required to actively seek alternative coverage.
Several factors are contributing to these market exits. Medicare Advantage plans are paid a fixed amount per enrollee by the federal government, and insurers have faced increasing pressure from rising healthcare costs, particularly for prescription drugs and specialized care. Changes to the risk adjustment system, which accounts for the health status of enrollees, have created financial headwinds for some plans. The Centers for Medicare & Medicaid Services (CMS) has been implementing enhancements to the MA and Part D Star Ratings program to promote quality improvement, but these changes likewise add complexity and potential costs for insurers.
UnitedHealthcare, the nation’s largest Medicare Advantage insurer, provides a stark example of this trend. As of February 2026, the company’s enrollment in the program had decreased by 9% – to approximately 9.4 million people – compared to October 2025. This reduction in enrollment, coupled with broader market exits by other insurers, is directly contributing to the increase in forced disenrollments.
Disparities in Impact: Who is Most Affected?
The impact of these disruptions is not evenly distributed across the Medicare Advantage population. The JAMA analysis reveals that beneficiaries facing forced disenrollments are more likely to be enrolled in smaller carrier plans and those with lower star ratings – a measure of plan quality. This suggests that plans with weaker financial positions or lower performance are more prone to exiting markets, leaving their enrollees vulnerable.
Geographic disparities are also significant. The study found that beneficiaries in rural areas are disproportionately affected by forced disenrollments. In 12 states, more than 20% of Medicare Advantage enrollees were forced to switch plans, with Vermont experiencing the highest rate at over 92%. Other states with particularly high rates include Idaho, North Dakota, South Dakota, and Wyoming, where forced disenrollment rates exceed 40%. This highlights the challenges faced by Medicare Advantage plans in less populated areas, where it can be more challenging to achieve economies of scale and maintain profitability.
Consequences for Beneficiaries and the Future of Medicare Advantage
Forced disenrollments can have significant consequences for beneficiaries. Switching plans can disrupt established relationships with healthcare providers, limit access to preferred benefits, and create confusion and stress. Beneficiaries may demand to navigate a complex enrollment process to find a new plan that meets their needs, and they may face changes in cost-sharing arrangements, formularies, and provider networks.
The increase in forced disenrollments also raises concerns about the long-term stability and competitiveness of the Medicare Advantage market. As insurers exit markets, it can reduce the number of plan choices available to beneficiaries, potentially leading to higher premiums and reduced innovation. The disruption caused by frequent plan changes can erode trust in the Medicare Advantage program and discourage enrollment.
Understanding Traditional Medicare as an Alternative
For those forced to exit their Medicare Advantage plans, traditional Medicare – also known as Original Medicare – offers a viable alternative. This program consists of Part A (hospital insurance) and Part B (medical insurance), and it generally allows beneficiaries to see any doctor or hospital that accepts Medicare. However, traditional Medicare typically requires beneficiaries to purchase a separate Part D plan for prescription drug coverage and a Medigap policy to cover out-of-pocket costs. The costs associated with these supplemental plans can be substantial, and the coverage may vary depending on the plan chosen.
Navigating the Changes: Resources for Beneficiaries
Beneficiaries facing forced disenrollment have several resources available to assist them navigate the transition. The Medicare Plan Finder, available on the CMS website, allows individuals to compare Medicare Advantage and traditional Medicare plans in their area. State Health Insurance Assistance Programs (SHIPs) provide free, unbiased counseling to Medicare beneficiaries. These programs can help individuals understand their options, enroll in a new plan, and resolve any issues they may encounter.
The Medicare Rights Center also offers valuable resources and advocacy services for Medicare beneficiaries. Their website provides information on Medicare coverage, enrollment, and appeals, and they offer a helpline for individuals who need assistance.
Key Takeaways
- Increased Disenrollments: A growing number of Medicare Advantage beneficiaries are being forced to switch plans due to insurer exits.
- Financial Pressures: Rising healthcare costs and regulatory changes are driving insurers to reassess their participation in the Medicare Advantage program.
- Disparate Impact: Rural residents and those enrolled in lower-rated plans are disproportionately affected by forced disenrollments.
- Alternative Options: Traditional Medicare remains a viable alternative for those who are forced to leave their Medicare Advantage plans.
The situation surrounding Medicare Advantage is dynamic, and further changes are likely in the coming years. CMS continues to monitor the program closely and make adjustments to payment policies and quality standards. The agency is expected to release updated enrollment data and star ratings for 2027 plans in the fall of 2026, providing further insights into the state of the Medicare Advantage market. Beneficiaries should stay informed about these changes and proactively review their coverage options to ensure they have access to the healthcare they need.
As the open enrollment period approaches, it is crucial for Medicare beneficiaries to carefully evaluate their healthcare needs and explore all available options. Understanding the potential disruptions caused by insurer exits and the benefits and drawbacks of both Medicare Advantage and traditional Medicare is essential for making informed decisions about their healthcare coverage.
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