Medicare is the federal health insurance program for Americans age 65 and older and certain younger people with disabilities. It was created in 1965, but the debate over national health insurance in the United States stretches back more than a century. Understanding how Medicare came to be helps explain why it is structured the way it is today.
The Road to Medicare: 1912 to 1964
The idea of national health insurance in the United States dates to 1912, when Theodore Roosevelt ran for president on a Progressive Party platform that included a proposal for a national health service. The idea resurfaced under Franklin D. Roosevelt during the New Deal era, but was ultimately left out of the Social Security Act of 1935 due to opposition from the American Medical Association (AMA). President Harry Truman proposed a national health insurance program in 1945 and again in 1949, but both efforts were defeated, largely due to opposition from the AMA, which characterized the proposal as socialized medicine.
Medicare Is Signed Into Law: 1965
After years of failed attempts at broader national health insurance, Congress narrowed its focus to the elderly, a group that faced high rates of uninsurance and poverty. On July 30, 1965, President Lyndon B. Johnson signed the Social Security Amendments of 1965 into law at the Truman Library in Independence, Missouri, with former President Truman present. The legislation created both Medicare and Medicaid. Harry Truman became the first Medicare beneficiary, receiving the first Medicare card.
| Component | What It Covered |
|---|---|
Medicare Part A (Hospital Insurance) | Inpatient hospital care, skilled nursing facility care, home health, and hospice |
Medicare Part B (Medical Insurance) | Physician services, outpatient care, and preventive services |
Medicaid (created simultaneously) | Health coverage for low-income individuals, administered by states |
Key Milestones in Medicare History
| Year | Event |
|---|---|
1972 | Medicare extended to people under 65 with permanent disabilities and end-stage renal disease (ESRD) |
1980 | Medigap (Medicare Supplement) insurance standardization efforts begin |
1983 | Prospective payment system introduced for hospitals, replacing cost-based reimbursement |
1997 | Balanced Budget Act creates Medicare+Choice (later renamed Medicare Advantage) as Part C |
2003 | Medicare Modernization Act adds Medicare Part D (prescription drug coverage), effective 2006 |
2010 | Affordable Care Act (ACA) closes the Part D donut hole, adds free preventive services, and creates the Independent Payment Advisory Board |
2022 | Inflation Reduction Act caps Medicare Part D out-of-pocket costs and allows Medicare to negotiate drug prices |
2026 | Part D out-of-pocket cap reduced to $2,000; drug price negotiation results take effect for first negotiated drugs |
Medicare Today
As of 2026, Medicare covers approximately 68 million Americans. The program is administered by the Centers for Medicare and Medicaid Services (CMS), a division of the U.S. Department of Health and Human Services. Medicare spending accounts for roughly 13% of the federal budget. The program continues to evolve, with ongoing debates about drug pricing, the solvency of the Hospital Insurance Trust Fund, and the growing role of Medicare Advantage plans.
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