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.
Sources of Supplemental Coverage Among Medicare Beneficiaries, 2009 Download Source Kaiser Family Foundation analysis of the Centers for Medicare & Medicaid Services Medicare Current Beneficiary Survey, 2009 Cost and Use file.
Today, 60 million people, including 51 million older adults and 9 million younger adults with disabilities, rely on Medicare for their health insurance coverage, but many Medicare beneficiaries rely on other sources of coverage to supplement their Medicare benefits. This data note explores sources of supplemental coverage among beneficiaries in traditional Medicare, based on data from the 2016 Medicare Current Beneficiary Survey.
In all but four states, insurance companies can deny private Medigap insurance policies to seniors after their initial enrollment in Medicare because of a pre-existing medical condition, such as diabetes or heart disease, except under limited, qualifying circumstances, a Kaiser Family Foundation analysis finds. Medigap policies provide supplemental health insurance to help cover the deductibles and coinsurance for Medicare covered services. One in four people in traditional Medicare had a Medigap policy in 2015. This…
This July 22, 2013 briefing, Streamlining Cost Sharing in Medicare: The Impact on Beneficiaries, explored the impact on beneficiaries of recent proposals to combine the two main parts of Medicare.
This issue brief analyzes federal and state guaranteed issue rules and how they impact beneficiaries’ access to Medigap, including the implications for Medicare beneficiaries with pre-existing conditions and those under age 65 with long-term disabilities. This brief also explores a recently finalized rule: Nondiscrimination in Health Programs and Activities regarding Section 1557 of the Affordable Care Act that may have implications for the Medigap market.
As part of several debt-reduction and Medicare-reform proposals, some policymakers propose to prohibit Medicare supplemental insurance policies (known as Medigap) from covering all of enrollees' out-of-pocket Medicare costs, which some believe leads to higher use of services and higher Medicare spending. Such changes would expose Medigap enrollees – currently about one in six Medicare beneficiaries – to a larger share of Medicare's cost-sharing requirements. This analysis commissioned by the Kaiser Family Foundation examines three potential…
This brief presents the most current data available on the Medicare supplemental insurance (Medigap) market, including enrollment and premiums by state and plan type, analyzes how many beneficiaries have first dollar coverage (particularly Plans C and F), and describes recent Medigap proposals that have emerged as part of efforts to reduce Medicare spending and the national debt.
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…
The House-passed legislation to repeal the Medicare Sustainable Growth Rate (SGR) includes a provision that would prohibit Medicare supplemental insurance (Medigap) policies from covering the Part B deductible for people who become eligible for Medicare beginning in 2020. A new Kaiser Family Foundation Data Note explores the implications of this proposal and finds that about 10 percent of 65-year olds on Medicare would have been affected in 2010 (the most recent year for which data…
In this new policy insight, Tricia Neuman examines current rules that may discourage seniors from switching from Medicare Advantage to traditional Medicare. The issue is explored through the lens of a 67-year-old beneficiary who faced difficult financial and health coverage choices in the aftermath of a serious biking accident.
© 2026 KFF