Medicare was created by Congress in 1965 as part of President Lyndon B. Johnson's Great Society legislation

Before 1965, most Americans over 65 had no health insurance. Many had retired and could not afford premiums. Insurance companies often refused to cover older adults because they were more likely to need medical care. Hospital bills could wipe out a lifetime of savings. Congress passed the Social Security Amendments of 1965, which created Medicare as a federal health insurance program for people 65 and older. President Johnson signed it into law on July 30, 1965, at the Harry S. Truman Library in Independence, Missouri — a symbolic choice, since Truman had first proposed national health insurance in 1945.

The law was written by members of Congress, particularly those on the House Ways and Means Committee and the Senate Finance Committee. Wilbur Mills, a congressman from Arkansas, played a central role in shaping the bill. The program was designed to work alongside Social Security, which had been created in 1935. Medicare was meant to solve a specific problem: older Americans were going without necessary medical care because they could not pay for it.

Key Takeaways

  • Congress created Medicare in 1965 through the Social Security Amendments, with President Johnson signing it into law on July 30, 1965.
  • The program was built to address the fact that most Americans over 65 had no health insurance and could not afford medical care.
  • Wilbur Mills and other members of Congress on the Ways and Means Committee and Finance Committee wrote and shaped the legislation.
  • Medicare began as two parts: Part A covered hospital care, and Part B covered doctor visits and outpatient services.
  • The program has been expanded several times since 1965, including the addition of Part D for prescription drugs in 2006.

Why Congress decided to create a federal health insurance program

In the early 1960s, surveys showed that one in four Americans over 65 lived in poverty. Medical bills were the leading cause of bankruptcy among older adults. Many had worked their whole lives but had no way to pay for hospital stays, surgery, or ongoing treatment. Their adult children often could not afford to help them.

Private insurance companies had little interest in covering older people. The cost of insuring someone over 65 was much higher than insuring a younger person, and the profit margins were thin. Some insurance companies refused to sell policies to anyone over 65 at any price. Even those who could buy insurance often faced high premiums and large gaps in coverage.

Congress saw this as a national problem that required a national solution. The idea was not entirely new — President Truman had proposed something similar two decades earlier — but the political moment in 1965 made it possible. The Democratic Party controlled both chambers of Congress by a wide margin, and there was broad public support for helping older Americans pay for medical care.

How the original Medicare program was structured

When Medicare launched on July 1, 1966, it had two main parts. Part A covered inpatient hospital care, skilled nursing facility care, hospice care, and some home health services. Part B was optional and covered doctor visits, outpatient services, lab tests, and medical equipment. People who turned 65 could enroll in Part A automatically through Social Security. Part B required a monthly premium, which was voluntary.

The program was funded through two sources. Part A was funded by a payroll tax — a small percentage taken from workers' paychecks and matched by employers, similar to the Social Security tax. Part B was funded partly by premiums paid by enrollees and partly by general tax revenue from the federal government.

Medicare was designed to work with, not replace, private insurance. People could still buy supplemental insurance (called Medigap) to cover costs that Medicare did not pay. The program did not cover everything — there were deductibles, copayments, and limits on coverage — but it provided a foundation that most older Americans had never had before.

The role of President Johnson and his administration

President Lyndon B. Johnson made Medicare a centerpiece of his Great Society agenda. He believed that a wealthy nation had a responsibility to may support that older citizens could see a doctor without fear of bankruptcy. Johnson had grown up in rural Texas and had seen firsthand how poverty and lack of access to medical care affected families.

Johnson's administration worked closely with Congress to move the bill forward. His staff coordinated with committee chairs and key legislators to build support. The President also used his political capital to persuade reluctant members of Congress. When the bill passed, Johnson made the signing ceremony a major public event, inviting President Truman to attend as a gesture of respect for his earlier efforts to create national health insurance.

Johnson's vision extended beyond Medicare. In the same year, Congress also created Medicaid, a separate program for low-income Americans of any age. Together, Medicare and Medicaid represented the largest expansion of the federal safety net since the New Deal in the 1930s.

Opposition to Medicare and how it was overcome

Not everyone supported Medicare. The American Medical Association (AMA) opposed the program, arguing that it would interfere with the doctor-patient relationship and lead to government control of medicine. Insurance companies also opposed it because they saw it as competition. Some members of Congress, particularly Republicans, argued that it was too expensive and would grow the federal government too much.

Supporters of Medicare countered that the current system was already broken — older Americans were going without care, and private insurance had failed to solve the problem. They argued that Medicare would not prevent doctors from practicing medicine or patients from choosing their doctors. They also pointed out that the program would be funded through payroll taxes, just like Social Security, so it was not a handout but something people had earned through work.

The bill passed with strong support in the House and Senate. In the House, it passed 307 to 116. In the Senate, it passed 70 to 24. This showed that while there was opposition, a clear majority of Congress believed Medicare was necessary and right.

How Medicare has changed since 1965

Medicare has been expanded and modified many times since its creation. In 1972, Congress extended Medicare to people under 65 who had been receiving Social Security Disability Insurance for at least two years, and to people of any age with end-stage renal disease. In 1988, Congress added catastrophic coverage (which was later repealed in 1989 after public backlash over the cost).

The biggest change came in 2006 with the addition of Part D, which covers prescription drugs. This was a response to the fact that many older Americans were skipping doses or not filling prescriptions because they could not afford them. Part D is run through private insurance companies that contract with Medicare, rather than being run directly by the government like Parts A and B.

In 2010, the Affordable Care Act made changes to Medicare, including closing the "donut hole" (a gap in prescription drug coverage) and adding preventive services with no cost-sharing. Congress continues to debate Medicare's future, including how to keep it solvent as the population ages and medical costs rise.

The lasting impact of Medicare's creation

Medicare fundamentally changed how older Americans experience aging. Before 1965, many seniors delayed or avoided medical care because they could not afford it. After Medicare, they could see a doctor, go to the hospital, and get treatment without losing their home or their savings. Studies have shown that Medicare reduced poverty among older adults and improved health outcomes.

Medicare also changed the relationship between the federal government and healthcare. It established the principle that the government has a role in ensuring access to medical care for certain populations. This idea has influenced policy debates ever since, including discussions about expanding coverage to younger people or creating a universal system.

Today, Medicare covers nearly 67 million Americans — not just those over 65, but also younger people with disabilities and those with end-stage renal disease. It is one of the largest and most important social programs in the United States. The program that Congress created in 1965 remains the foundation of health insurance for older Americans more than 50 years later.

Frequently Asked Questions

Did Medicare exist before 1965?

No. Before 1965, there was no federal health insurance program for older Americans. Some states had small programs, and some older people had private insurance, but most had no coverage at all. Medicare was created entirely by the 1965 law.

Why did Congress choose to create Medicare instead of a universal system for everyone?

Congress focused on older Americans first because they had the greatest need and the least ability to work and earn income. The political consensus in 1965 was strong enough to pass Medicare, but not strong enough to pass a system covering all Americans. Medicaid was created at the same time for low-income people of any age, but universal coverage was not politically possible then and has not been since.

Did doctors and hospitals support Medicare when it was created?

The American Medical Association opposed it, but many individual doctors and hospitals supported it or remained neutral. Once Medicare passed, doctors and hospitals worked with the program. The fear that Medicare would harm the medical profession did not come to pass — doctors continued to practice medicine and set their own fees, though Medicare set limits on what it would pay.

How much did Medicare cost when it started?

Medicare's first-year costs were lower than many had predicted, partly because enrollment was slower than expected and partly because the program was designed conservatively. However, costs have grown significantly over the decades as the population has aged and medical technology has advanced. This is one reason Congress has made changes to the program over time.

Could Medicare be eliminated or replaced?

Eliminating Medicare would require an act of Congress, just as creating it did. While there have been proposals to change how Medicare works or to give people more choice in how they receive coverage, there is no current movement to eliminate the program entirely. Medicare remains popular with both older Americans and the general public.