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.
Medicare: The Essentials (July 2013) Download Medicare Enrollment, 1966-2013 Download Source Centers for Medicare & Medicaid Services, Medicare Enrollment: Hospital Insurance and/or Supplemental Medical Insurance Programs for Total, Fee-for-Service and Managed Care Enrollees as of July 1, 2011: Selected Calendar Years 1966-2011; 2012-2013, HHS Budget in Brief, FY2014.
This Policy Insight explores possible explanations for the continued rise in Medicare Advantage enrollment between 2010 and 2013 in spite of a projected decrease following payment changes in the Affordable Care Act (ACA).
This Data Spotlight provides an overview of Medicare Advantage enrollment patterns in March 2013, and examines variations by plan type, state, and firm. It also analyzes trends in premiums paid by beneficiaries enrolled in Medicare Advantage plans, including variations by plan type, and describes the out-of-pocket limits and prescription drug coverage in the Part D “donut hole” provided by the plans in 2013.
The Affordable Care Act (ACA) will significantly increase coverage options through an expansion of Medicaid and the creation of new health insurance exchange marketplaces. However, effective outreach and enrollment efforts will be key to ensuring that new coverage opportunities translate into increased coverage.
This brief provides insight into lessons learned from Medicaid and CHIP outreach and enrollment strategies by profiling a successful initiative of the Michigan Primary Care Association to facilitate coverage renewals through a systematic, technology-based reminder system coupled with one-on-one assistance.
Under the Affordable Care Act (ACA), there will be a new continuum of coverage options available beginning in 2014.
Useful review for anyone seeking to comprehend complex issues leading up to major implementations taking effect in 2014
This report presents data on changes in Medicaid's enrollment and spending between federal fiscal year 2007 and federal fiscal year 2011, a period which includes the worst economic downturn in the United States since the Great Depression of the 1930s.
Medicare supplemental insurance, also known as "Medigap," is an important source of supplemental coverage for nearly one in four people on Medicare. Traditional Medicare has cost-sharing requirements and significant gaps in coverage; Medigap helps make health care costs more predictable and stable for beneficiaries by covering some or all Medicare costs, including deductibles and cost-sharing.
Under the Affordable Care Act (ACA), beginning in 2014 all states will employ streamlined, technology-driven enrollment systems to help eligible people sign up for insurance affordability programs, including Medicaid, the Children's Health Insurance Program and the new health insurance exchange marketplaces.
© 2025 KFF