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 issue brief provides an overview of Medicare, the health insurance program for people ages 65 and over and younger people with long-term disabilities. The brief review the characteristics of people on Medicare, what Medicare covers, benefit gaps and supplemental coverage, beneficiaries' out-of-pocket health care spending, program spending and financing, payment and delivery system reform, and issues for the future of Medicare.
Today a record three in 10 Medicare beneficiaries are enrolled in Medicare Advantage health plans, mainly HMOs and PPOs, which are paid by the government to provide Medicare benefits to their enrollees.
For the first time, 1 in every 3 people with Medicare is enrolled in Medicare Advantage, the private Medicare plans that have played an increasingly large role in the Medicare program over the past decade, according to a new analysis from the Kaiser Family Foundation.
A small share of Medicare Advantage enrollees switch plans each year, but those who do tend to pick plans with lower premiums and out-of-pocket limits than the plans they left behind, according to a new analysis by the Kaiser Family Foundation.
On March 26, 2015, the House of Representatives passed H.R. 2, the Medicare Access and CHIP Reauthorization Act of 2015, which would replace the Sustainable Growth Rate (SGR) formula, among other changes; the bill is currently pending in the U.S. Senate. H.R. 2 includes a provision that would prohibit Medicare supplemental insurance (Medigap) policies from covering the Part B deductible for people who become eligible for Medicare on or after January 1, 2020. This data note looks at the number and share of “new” Medicare beneficiaries who would be affected by the Medigap provision in H.R. 2, if it had been implemented in 2010, using the most current data sources available, and examines trends in Medigap enrollment among new beneficiaries since 2000.
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 for the first time and also examines the insurers exiting the market.
Medicare does not cover routine dental care, and two-thirds of the Medicare population have no dental coverage at all. With limited or no dental coverage, some incur high out-of-pocket costs, while others forgo need dental care because they can’t afford it.
This updated chartpack presents sources of supplemental and prescription drug coverage among Medicare beneficiaries in 2007, the most recent year for which national data are available. The chartpack looks at variations in supplemental and prescription drug coverage by income, race/ethnicity, age, urban/rural location, and health status.
This updated resource features more than 80 charts and tables with detailed information about the Medicare program and the 42 million seniors and younger people with disabilities who rely on the program for health insurance coverage. It covers a wide range of relevant data, including state-by-state information when available.
This brief describes how the new board created under the 2010 health reform law is expected to limit the growth in Medicare spending over time.
© 2026 KFF