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.
While Medicare Advantage enrollment is highly concentrated among a small number of firms, UnitedHealthcare has seen the largest and fastest growing share of enrollees over the past decade. Learn more in this Chart of the Week.
This brief analyzes Medicaid enrollment and spending trends for FY 2019 and FY 2020 based on interviews and data provided by state Medicaid directors as part of the 19th annual survey of Medicaid directors in all 50 states and the District of Columbia. States reported declines in Medicaid enrollment and modest growth in total Medicaid spending for state fiscal year (FY) 2019 and budgeted for nearly flat enrollment growth but a return to more typical rates of spending growth for FY 2020.
Recently there have been declines in Medicaid and CHIP enrollment, reversing a previous trend of increases following implementation of the ACA. Experiences in some states suggest that renewal process requirements and growing use of periodic eligibility checks may be contributing to disenrollment among people who are still eligible for coverage as well as increased churn in coverage. This brief reviews current rules and state processes related to renewal and periodic eligibility reviews and discusses potential process issues that may be contributing to Medicaid and CHIP enrollment declines.
Our 18th annual 50-state survey of Medicaid and CHIP eligibility, enrollment, renewal, and cost sharing policies provides data on policies in place as of January 2020 and serves as a benchmark against which we can measure state actions to respond to COVID-19 and the economic crisis.
The analysis finds that people who switched from traditional Medicare to Medicare Advantage in 2016 had health spending in 2015 that was $1,253 less, on average, than the average spending for beneficiaries who remained in traditional Medicare (after adjusting for health risk). The findings suggest that the current payment method may systematically overestimate expected costs of Medicare Advantage enrollees. Adjusting payments to reflect Medicare Advantage enrollees’ prior use of health services could potentially lower total Medicare spending by billions of dollars over a decade.
This 17th annual survey of the 50 states and the District of Columbia (DC) provides data on Medicaid and the Children’s Health Insurance Program (CHIP) eligibility, enrollment, renewal, and cost sharing policies as of January 2019.
This report provides data on state Medicaid and CHIP eligibility levels and presents a snapshot of key aspects of state enrollment and renewal procedures in place during the COVID-19 PHE based on information from the 19th annual survey of Medicaid and CHIP program officials in the 50 states and DC.
Four million uninsured people could get an ACA bronze plan with no premium payment and 4.9 million others could get subsidies to offset the cost of such a plan if the Biden Administration were to re-open ACA marketplace enrollment, a KFF analysis finds.
This 16th annual 50-state survey provides data on Medicaid and the Children’s Health Insurance Program (CHIP) eligibility, enrollment, renewal and cost sharing policies as of January 2018. It takes stock of how the programs have evolved as the fifth year of implementation of the Affordable Care Act (ACA) begins, discusses policy changes made during 2017, and looks ahead to issues that may affect state policies moving forward. It is based on a survey of state Medicaid and CHIP officials conducted by the Kaiser Family Foundation and the Georgetown University Center for Children and Families. State data are available in Appendix Tables 1-20.
Overall ACA marketplace signups for 2018 dropped by 3.7 percent compared to last year’s enrollment period, a new analysis from the Kaiser Family Foundation finds.
© 2026 KFF