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.
With open enrollment beginning Oct. 1, this event examines outreach and enrollment efforts to help millions of uninsured Americans gain coverage in the Affordable Care Act's new health insurance Marketplaces or through the expansion of state Medicaid programs.
This Data Spotlight provides an overview of Medicare Advantage enrollment patterns in March 2014, and examines variations by plan type, state, and firm. It also analyzes trends in premiums paid by beneficiaries enrolled in Medicare Advantage plans and describes the changes in limits on out-of-pocket expenses and prescription drug coverage in the Part D “donut hole” provided by the plans in 2014.
This Data Spotlight reviews national and state-level enrollment trends as of March 2016 and examines variation in enrollment by plan type and firm. It analyzes the most recent data on premiums, out-of-pocket limits, Part D cost-sharing for drugs, and plans’ quality ratings for Medicare Advantage enrollees.
This interactive zip code tool and map displays enrollment in the Health Insurance Marketplaces as a share of the potential market in small geographic areas across the country.
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…
In this animated video, the YouToons get ready for Obamacare and explore health insurance changes under the Affordable Care Act. This cartoon serves as a health reform tutorial for consumers and organizations.
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.
In 2020, more than 22 million Medicare beneficiaries (34%) are enrolled in Medicare Advantage plans, which are mainly HMOs and PPOs offered by private insurers as an alternative to the traditional Medicare program. This data note provides an overview of the Medicare Advantage plans that will be available in 2020, including the variation in the number of plans available by county and plan type. The brief also examines the insurers entering the Medicare Advantage market…
This issue brief provides an overview of new Medicaid enrollment data released by Centers for Medicare and Medicaid Services and its interpretation to assess the influence of the ACA on Medicaid enrollment.
This brief provides an overview of initiatives to connect the justice-involved population to Medicaid coverage and care in the community in three states—Arizona, Connecticut, and Massachusetts—based on interviews with key stakeholders. These states are leading efforts in these areas and provide key lessons about how to coordinate across health care and corrections and the potential of such initiatives to better link individuals to the physical and behavioral services they need. Each of the case study…
© 2026 KFF
