Medicare Advantage

The Centers for Medicare and Medicaid Services has recently taken actions to increase transparency in Medicare Advantage, however substantial data gaps remain that limit the ability of policymakers and researchers to conduct oversight and assess the program’s performance, and for Medicare beneficiaries to compare Medicare Advantage plans offered in their area.

Using health insurer financial data for 2023, we find that in 2023, per enrollee gross margins were highest in the Medicare Advantage market, and medical loss ratios were lowest in the individual insurance market. Across most markets, gross margins have been relatively stable in recent years.

This brief analyzes 2024 Medicare Part D enrollment, premiums, and cost sharing. The analysis highlights the continued growth in Medicare Advantage enrollment in the Part D marketplace and substantially higher average monthly premiums for stand-alone Part D drug plan coverage. Changes to the Part D benefit included in the Inflation Reduction Act are helping to lower out-of-pocket costs for patients but could also contribute to higher-priced Part D coverage.

This issue brief merged beneficiary-level Medicare and Medicaid data from 2021 to document sources of coverage for dual-eligible individuals nationwide and by state.

Each year, Medicare beneficiaries have an opportunity to make changes to how they receive their Medicare coverage during the nearly 8-week annual open enrollment period. This brief answers key questions about the Medicare open enrollment period and Medicare coverage options.

This issue brief analyzes federal and state guaranteed issue rules and how they impact beneficiaries’ access to Medigap, including the implications for Medicare beneficiaries with pre-existing conditions and those under age 65 with long-term disabilities. This brief also explores a recently finalized rule: Nondiscrimination in Health Programs and Activities regarding Section 1557 of the Affordable Care Act that may have implications for the Medigap market.

This analysis examines the extent to which large private and non-federal public employers that offer retiree health benefits are turning to Medicare Advantage and why they are making this shift, using data from the 2024 Employer Health Benefits Survey. We find that slightly more than half (56%) of large employers offering retiree health benefits to Medicare-age retirees offer coverage to at least some retirees through a contract with a Medicare Advantage plan, more than double the share in 2017 (26%).

This brief provides an overview of the Medicare Part D prescription drug benefit, including current data on plan availability, enrollment, and spending and financing, and highlights recent changes under the Inflation Reduction Act.

A new KFF analysis finds higher Medicare spending among people who switched from Medicare Advantage to traditional Medicare than for similar beneficiaries who were in traditional Medicare all along. Medicare spent an average of 27% more on such beneficiaries, according to the analysis, which examined health costs in traditional Medicare…

This analysis looks at traditional Medicare spending among people who choose to disenroll from Medicare Advantage and obtain coverage under traditional Medicare during the annual Medicare open enrollment period. It compares their traditional Medicare spending (Parts A and B) in the year following disenrollment to similar people who were continuously covered by traditional Medicare, using data from the Medicare Beneficiary Summary File (MBSF) for 2021 and 2022.