Medicare began in 1965 as a federal insurance program for people 65 and older

President Lyndon B. Johnson signed Medicare into law on July 30, 1965. The program went live on July 1, 1966. It was created to provide hospital and medical insurance to Americans aged 65 and over, a group that had the highest rates of uninsured people at the time. Before Medicare existed, most seniors either paid out of pocket for medical care or went without.

The law that created Medicare is called the Social Security Act Amendments of 1965. It was passed by Congress and became part of the larger Social Security system, though Medicare is a separate program with its own funding and rules. The same law also created Medicaid, a program for low-income Americans of any age.

When Medicare launched, it covered about 19 million people. Today it covers over 66 million Americans — not just those 65 and older, but also some younger people with disabilities and people with end-stage renal disease.

Key Takeaways

  • Medicare was signed into law on July 30, 1965, and began covering people on July 1, 1966.
  • The program was created to provide hospital and medical insurance to seniors 65 and older, who had the highest rates of being uninsured.
  • Medicare is part of the Social Security Act Amendments of 1965, but it is a separate program with its own funding and enrollment.
  • The same law that created Medicare also created Medicaid, a program for low-income Americans.

Why Medicare was created in 1965

Before 1965, most Americans over 65 had no health insurance. Private insurance companies either refused to cover seniors or charged premiums so high that few could afford them. Medical costs were rising, and seniors on fixed incomes — usually Social Security alone — could not keep up. Hospital stays and surgery could wipe out a lifetime of savings.

The federal government began studying the problem in the 1950s. By the early 1960s, there was broad political support for a national health program for seniors. Labor unions, senior advocacy groups, and medical organizations all pushed for change. President Harry Truman had proposed a national health plan in 1945, but it failed. President John F. Kennedy revived the idea in the early 1960s, calling it "King-Anderson" after the senators who sponsored it.

When Johnson took office after Kennedy's assassination in 1963, he made healthcare for seniors a priority. The 1964 election gave Democrats a large majority in Congress, and they passed the Medicare bill in 1965. Johnson signed it at the Truman Library in Independence, Missouri, as a tribute to Truman's earlier efforts.

What Medicare covered when it started

Original Medicare in 1966 had two parts: Part A and Part B. Part A covered hospital stays, skilled nursing facility care, hospice, and some home health services. Part B covered doctor visits, outpatient care, medical equipment, and some preventive services. Both parts had deductibles and copayments, and beneficiaries had to pay a monthly premium for Part B.

The program did not cover everything. Prescription drugs, dental care, vision care, and hearing aids were not included. Long-term nursing home care was not covered unless it followed a hospital stay. These gaps in coverage have shaped Medicare policy ever since, and some remain today.

Enrollment was voluntary at first. Seniors had to sign up during a seven-month window in 1965 and 1966. About 90 percent of may be able to access seniors enrolled by the end of 1966, showing how much the program was needed.

How Medicare has changed since 1965

Medicare has expanded several times since its creation. In 1972, Congress extended coverage to people under 65 with permanent disabilities and to people with end-stage renal disease. In 1983, a major reform changed how hospitals were paid — instead of billing for each service, Medicare began paying a fixed amount per diagnosis. This change was meant to control costs.

In 1997, Congress created Medicare Part C, also called Medicare Advantage. This allowed seniors to receive their Medicare benefits through private insurance companies instead of the government program. In 2006, Medicare Part D was added to cover prescription drugs, something the original program did not include.

The program has also added preventive services over time. Today Medicare covers annual wellness visits, cancer screenings, and vaccines — services that were not part of the original 1966 plan. The Affordable Care Act of 2010 expanded preventive coverage and began closing the "donut hole" in prescription drug coverage.

Who could join Medicare in 1966 versus today

In 1966, Medicare was only for people 65 and older. Today, younger people can join if they have been receiving Social Security disability benefits for 24 months, or if they have end-stage renal disease or ALS (amyotrophic lateral sclerosis). Spouses and children of workers who have died can also join at any age if they meet other conditions.

The age requirement of 65 was chosen because that was the standard retirement age in 1965. It remains 65 today, though the full retirement age for Social Security has risen. Some people can delay joining Medicare past 65 without penalty if they are still working and covered by an employer plan, a rule that did not exist in the original program.

The cost of Medicare then and now

When Medicare began in 1966, the federal government estimated it would cost about $9 billion per year by 1990. The actual cost in 1990 was much higher — a sign that medical inflation and increased enrollment outpaced early projections. Today, Medicare spending is over $800 billion per year across all parts of the program.

The monthly premium for Part B in 1966 was $3. Today it varies by income but is typically over $160 per month for most beneficiaries. Part A has no monthly premium, but it has a deductible that changes each year. These costs have risen much faster than general inflation, reflecting the rising cost of medical care.

Funding for Medicare comes from three sources: payroll taxes (for Part A), premiums paid by beneficiaries (for Parts B and D), and general federal revenue. The payroll tax rate has remained relatively stable since 1965, but the program's costs have grown faster than the tax revenue it collects, creating long-term funding challenges that Congress continues to debate.

Frequently Asked Questions

Did Medicare exist before 1965?

No. Before 1965, there was no federal health insurance program for seniors. Some states had small programs, and some employers offered retiree health benefits, but Medicare was the first national program. Veterans had access to VA healthcare, which existed since 1930, but that is separate from Medicare.

Why did it take until 1965 to create Medicare?

The United States had debated national health insurance since the 1940s. Opposition from the American Medical Association, insurance companies, and some politicians delayed it for decades. The political climate changed in the early 1960s, and the large Democratic majority after the 1964 election made passage possible.

Has Medicare always covered people under 65?

No. Medicare was only for people 65 and older when it started in 1966. Coverage for younger people with disabilities was added in 1972. Coverage for people with end-stage renal disease was also added in 1972, and coverage for people with ALS was added much later.

What happened to people over 65 before Medicare existed?

Most paid for medical care out of pocket or went without. Some had private insurance, but premiums were very high and coverage was limited. Charities and hospitals provided some free or reduced-cost care. Many seniors delayed or skipped medical treatment because they could not afford it.

Is Medicare the same as Social Security?

No, they are separate programs. Both were created by the Social Security Act, and both are run by the Social Security Administration, but Medicare is health insurance and Social Security is retirement income. You can receive one without the other, though most seniors receive both.