The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
This analysis of trends in health insurers’ financial data shows that insurers’ gross margins per enrollee dipped slightly in 2024 across four markets, remaining highest in the Medicare Advantage market, followed by the individual (non-group) market, the fully insured group (employer) market, and Medicaid managed care. The analysis also examines insurers’ medical-loss ratios across the four markets.
Medicare Advantage is the rapidly growing private plan alternative to traditional Medicare that provides coverage to approximately half of Medicare beneficiaries. On Tuesday, March 21, three experts joined series moderator Larry Levitt in a 45-minute discussion on Medicare Advantage, addressing such questions as: What has driven the growth in Medicare Advantage enrollment? What are the implications of enrollment being concentrated in a few insurance firms? Is the federal government overpaying plans? What would the new…
CMS recently finalized policies as part of the 2027 Medicare Advantage final rule that both enhance consumer protections and roll back changes to the Medicare Advantage program that were intended to protect consumers. These changes have gotten less attention than payment issues and changes to the star ratings system, which also affect plan payments, but could have implications for Medicare beneficiaries.
With Medicare’s annual open enrollment period underway, a new KFF analysis finds that Medicare Advantage enrollees, on average, had access to just under half (48%) of the physicians in their area who were available to people enrolled in traditional Medicare. The finding illustrates a key tradeoff for beneficiaries in choosing Medicare Advantage. Such plans can be appealing to beneficiaries because they offer extra benefits and cap out-of-pocket costs without the need for supplemental coverage. But…
Virtually all (98.9%) of the 2.6 million Medicare beneficiaries enrolled in a Medicare Advantage plan that terminated coverage at the end of 2025 have at least one MA-PD available in 2026, including more than two-thirds (68.7%) who have the option of enrolling in a plan sponsored by the same insurer.
In his latest column, President and CEO Dr. Drew Altman asks if prior authorization review could be eliminated entirely, discussing how it might be done and the tradeoffs.
Just over 35 million people are enrolled in Medicare Advantage in February 2026, an increase of 1.1 million since a year ago. The increase was largely driven by increased enrollment in special needs plans.
Summary of Key Changes to Medicare in 2010 Health Reform Law . This brief provides a detailed look at the improvements in Medicare benefits, changes to payments for providers and Medicare Advantage plans, various demonstration projects and other Medicare provisions in the law. It includes a timeline of key dates for implementing the Medicare-related provisions in the law.
This analysis documents the different sources of coverage among people with Medicare and examines variation in beneficiary characteristics by source of coverage.
© 2026 KFF