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 analysis examines the extent to which states are providing health benefits to their Medicare-eligible retirees through Medicare Advantage arrangements. In 2024, a majority of states offer Medicare Advantage plans to their state retirees, with 13 offering Medicare Advantage exclusively.
This analysis details how ACA marketplace premiums changed by county from 2023 to 2024, after taking into account expanded subsidies available under the Inflation Reduction Act.
Enhanced premium subsidies were first made available under the American Rescue Plan Act and extended until the end of 2025 under the Inflation Reduction Act. This analysis shows the impact that enhanced subsidies have had on enrollment and premium payments, and the potential implications if the enhanced subsidies expire.
A KFF analysis of physician networks in the Affordable Care Act’s Marketplace plans finds wide variations in the share of local practicing physicians who participate, with the least costly plans generally having a smaller share of physicians than more expensive plans.
Mergers and acquisitions involving hospitals and other health care providers are drawing attention from federal and state regulators, including the Federal Trade Commission, and policymakers amid concerns that such consolidations can reduce competition and contribute to the high costs of health care.
Without the enhanced subsidies in the Inflation Reduction Act (IRA), Affordable Care Act (ACA) Marketplace enrollees in 12 of the states that use HealthCare.gov would see their annual premium payments at least double on average, according to a new KFF analysis.
This issue brief offers an early look into how competitive the health insurance exchanges (also called marketplaces) are under the Affordable Care Act in selected states. Through analysis of enrollment data released by seven states (California, Connecticut, Minnesota, New York, Nevada, Rhode Island, and Washington) this brief finds that exchange markets in California and New York are shaping up to be more competitive than their individual markets were in 2012 while those of Connecticut and Washington show less competition (less even market share distribution). In several states, market concentration of individual insurers have shifted significantly compared to the individual market prior to the ACA, pointing to the potential for greater price competition in the future and the influence of new entrants to the market.
The Health Insurance Marketplace Calculator, updated with 2023 premium data, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA).
This data spotlight report examines trends in the Medicare Advantage marketplace, including the choices available to Medicare beneficiaries in 2014, premium levels and other plan features. Medicare beneficiaries, on average, will have 18 private Medicare Advantage plans available to them in 2014, reflecting both new plans entering the market and old plans exiting it. If Medicare Advantage enrollees remain in their current plans, average monthly premiums will rise by almost $5 per month, or 14 percent, to $39 per month. The analysis also examines some benefits provided by Medicare Advantage plans including drug coverage and caps on out-of-pocket spending, and finds that average out-of-pocket limits across all plans will climb 11 percent to $4,797 in 2014. Additionally, this analysis examines changes in the types of plans available (HMOs, PPOs, etc.), including special needs plans in 2014.
© 2026 KFF