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 Policy Insight explores possible explanations for the continued rise in Medicare Advantage enrollment between 2010 and 2013 in spite of a projected decrease following payment changes in the Affordable Care Act (ACA).
A new brief from the Kaiser Family Foundation documents the continuing climb in Medicare Advantage plan enrollment, even at a time when payments to such plans are being reduced under the Affordable Care Act. Despite spending reductions enacted in the ACA to reduce historical overpayments to Medicare Advantage plans, from March 2013 to March 2014 enrollment in Medicare Advantage plans grew by 9 percent, or 1.4 million people, to reach a total of 15.7 million…
This early look at the growth in the individual or nongroup market during the first three months of 2014 uses first quarter enrollment data submitted by insurance companies to state regulators to estimate the size of the market at the end of March. It includes both on and off exchange enrollment and is net of any people leaving the market (whether through plan cancellations or general churn in the market). It does not include the…
This report focuses on changes in monthly CHIP enrollment between December 2012 and December 2013. This is a long standing report that collects monthly CHIP enrollment data for December (and June, not reported here) going back to 2000. While the data provided in this report are not directly comparable to the data released by CMS, they provide context for the preliminary data released by CMS, illustrating historical trends in CHIP enrollment.
This report focuses on changes in monthly Medicaid enrollment between December 2012 and December 2013. This is a long standing report series that collects monthly Medicaid enrollment data for December (and June, not reported here) going back to 2000. While the most recent data included in this report predate preliminary data released by CMS that show the early effects of full implementation of the ACA, this report series is an important source of historical trend…
This Data Snapshot provides 50-state data on Medicaid monthly enrollment trends, adding June 2013 data. Overall, Medicaid enrollment growth continued to slow to the lowest rate since the start of the Great Recession as the economic conditions continued to slowly improve. While enrollment growth rates have been trending downward as economic conditions continue to slowly improve, enrollment growth is expected to increase significantly as states implement the ACA. Regardless of whether states decide to implement…
This issue brief walks through data recently released from Health and Human Services (HHS) and what it can and cannot tell us about the number of people that have applied for Medicaid since open enrollment for health insurance marketplaces began, how many have enrolled, and what the role of the ACA is in recent Medicaid coverage gains.
This brief provides an overview of the many different paths to enrollment in Medicaid and CHIP, including paths created under the Affordable Care Act (ACA), and reviews the available national level data on enrollment through these avenues.
The Centers for Medicare & Medicaid Services (CMS) recently established 12 new Medicaid and CHIP eligibility and enrollment performance indicators for states to report beginning in October 2013. These indicators provide insight into the performance of new eligibility and enrollment policies established under the Affordable Care Act (ACA). In December 2013, CMS released initial reports for a subset of the indicators. This brief provides an overview of the new performance indicators; the initial data; and…
This brief reviews the rules around the enhanced federal medical assistance percentages (FMAP) provided in the Affordable Care Act (ACA), the process for states to claim the enhanced matching funds and a discussion about what information the new data will provide looking forward.
© 2026 KFF