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.
State Health Facts is a KFF project that provides free, up-to-date, and easy-to-use health data for all 50 states, the District of Columbia, and the United States. It offers data on specific types of health insurance coverage, including employer-sponsored, Medicaid, Medicare, as well as people who are uninsured by demographic characteristics, including age, race/ethnicity, work status, gender, and income. There are also data on health insurance status for a state's population overall and broken down by age, gender, and income.
This brief provides key data on socioeconomic characteristics and health coverage among children of immigrants based on KFF analysis of the American Community Survey data. It also examines potential implications of policies and actions that may be implemented by the incoming Trump administration.
This brief uses 2021 Medicaid claims data to examine utilization among Medicaid expansion adults and estimate how much cost sharing these enrollees could be required to pay under the new requirement if all states imposed the maximum cost sharing amounts. This is an illustrative analysis intended to describe which enrollees may be subject to the most cost sharing under the new provisions rather than estimate exactly what expansion enrollees may actually pay.
To understand the impact of Medicaid work requirements included in the budget reconciliation bill being debated in Congress, KFF has undertaken two different analyses using different data sources. Using 2023 data from the Survey of Income and Program Participation, this analysis looks at the share of adults who work at least 80 hours per month, the reasons some do not, and how consistently individuals meet the requirement over a six-month period.
This analysis details the number of people who would become uninsured from policy changes in the ACA Marketplaces and Medicaid. The Congressional Budget Office estimates that, taken together, these changes will result in 16 million more uninsured people in the year 2034 than would otherwise be the case.
This analysis examines the potential impacts of a provision in the House reconciliation bill that proposes reducing the federal matching rate for the Affordable Care Act (ACA) Medicaid expansion population from 90% to 80% for states that either provide health coverage or financial assistance to purchase health coverage to individuals who are not “a qualified alien.”
This Health Policy 101 chapter explores Medicaid, the primary U.S. program providing comprehensive coverage of health care and long-term services and supports to about 80 million low-income people. Originating in 1965 and expanding with the Affordable Care Act, the chapter reviews Medicaid's evolution, including 2025 changes, and its joint federal and state financing and administration. It discusses how state-level flexibility in managing Medicaid leads to variation in coverage, spending, health care delivery, and access across different states.
This Health Policy 101 chapter explores Medicare, a federal health insurance program covering more than 68 million people, established in 1965 for people age 65 or older and later expanded to cover people under age 65 with long-term disabilities. In addition to detailing Medicare eligibility, coverage, and spending, the chapter examines the increased role of private plans in providing benefits and the financing challenges posed by increasing health care costs and an aging population.
This brief takes a closer look at the five largest publicly traded companies (also referred to as “parent” firms) operating Medicaid MCOs, which account for half of Medicaid MCO enrollment nationally. This analysis presents the latest enrollment and financial data (through the end of 2023) as well as key takeaways from the firms’ unwinding experience.
This brief presents findings from the 2023 KFF Employer Health Benefits Survey on coverage of abortion services in large employer-sponsored health plans, changes employers made to abortion coverage since the 2022 Supreme Court ruling, and employers’ provision of financial assistance for travel out of state to obtain an abortion.
This report provides new data on health and health care experiences of immigrant adults ages 18 and over in the U.S., including by immigration status, income, race and ethnicity, and other factors. It stems from a KFF-Los Angeles Times partnership survey, the largest and most representative survey focused on immigrants living in the U.S.
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