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.
The 12.5 million people who are jointly enrolled in Medicare and Medicaid include some of the poorest individuals in the U.S. with some of the highest health needs, requiring disproportionately high spending from both programs to support them.
This brief examines national and state-level data on enrollment and spending for Medicare-Medicaid enrollees using the 2019 and 2020 Medicare Beneficiary Summary Files and the 2019 Transformed Medicaid Statistical Information System (T-MSIS). Spending data for Medicare includes beneficiaries in traditional Medicare only, since spending data for beneficiaries enrolled in Medicare Advantage plans are unavailable. State-level data on Medicare-Medicaid enrollment and spending are available through KFF’s State Health Facts.
Roughly two-thirds (65%) of people who were disenrolled from Medicaid or the Children’s Health Insurance Program (CHIP) in a recent year became uninsured for all or part of the 12 months that followed, a new KFF analysis finds.
This brief uses pre-pandemic data from the 2016-2019 Medical Expenditure Panel Survey (MEPS) to examine the extent to which people enroll in and retain other coverage during the 12 months following disenrollment from Medicaid/CHIP.
A new KFF analysis finds that an estimated 1.7 million Medicaid enrollees could become ineligible for federal Medicaid under proposed work requirements and presents state-by-state projections, based on estimates of coverage loss from the Congressional Budget Office (CBO).
A new KFF analysis finds that between 8 and 24 million people across the U.S. could be disenrolled from Medicaid during the unwinding of the program’s continuous enrollment provision. The estimates draw on data collected through KFF’s recent survey of state Medicaid and CHIP officials, conducted with the Georgetown University Center for Children and Families.
The unwinding of the continuous enrollment provision will play out differently across the states based on policy choices states have made and variation in their administrative infrastructures. Some states have adopted multiple policies that are more likely to promote continued coverage among those who remain eligible.
Ten months into the unwinding of the Medicaid continuous enrollment provision, states have conducted renewals for roughly half of all enrollees in the program. This policy watch examines three key questions to monitor as unwinding continues.
A new KFF analysis finds that a congressional proposal to significantly cut federal spending on the Affordable Care Act’s Medicaid expansion could reduce total Medicaid spending by up to nearly one-fifth, or $1.9 trillion, over a 10-year period, and end Medicaid coverage for as many as 20 million people.
This analysis examines the potential impacts on states and Medicaid enrollees of eliminating the 90% federal match rate for the Affordable Care Act (ACA) expansion. Eliminating the federal match rate for adults in the Medicaid expansion could reduce Medicaid spending by nearly one-fifth ($1.9 trillion) over a 10-year period and up to nearly a quarter of all Medicaid enrollees (20 million people) could lose coverage.
© 2025 KFF
