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

Medicare did not exist before 1965. Before that year, most Americans over 65 had no health insurance at all, or coverage so limited it left them paying most medical costs out of pocket. 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, and the program began on July 1, 1966.

The law was written by members of Congress, debated in both the House and Senate, and shaped by input from the American Medical Association, hospitals, insurance companies, and labor unions. It was not written by a single person or agency. The final bill reflected compromises between those who wanted a broader program and those who wanted to limit government involvement in healthcare.

Key Takeaways

  • Congress created Medicare through the Social Security Amendments of 1965, which President Johnson signed into law.
  • The program was designed to cover people 65 and older who had no other way to pay for hospital and doctor visits.
  • Medicare Part A (hospital insurance) and Part B (medical insurance) were the original two parts, created at the same time.
  • The Centers for Medicare and Medicaid Services, a federal agency under the Department of Health and Human Services, runs Medicare today.

Why Congress created Medicare in 1965

In the early 1960s, surveys showed that most people over 65 could not afford hospital care or doctor visits. Many had retired and lived on fixed incomes. Private insurance companies either would not sell policies to older people or charged premiums so high that few could pay them. Hospitals and doctors were treating elderly patients who could not pay, and the costs were rising.

Congress saw Medicare as a way to solve two problems at once: give older Americans a way to pay for medical care, and reduce the financial burden on hospitals and doctors who treated patients for free. The program was also part of a broader effort by the Johnson administration to expand social insurance programs.

What the original Medicare law included

The 1965 law created two parts. Part A covered hospital stays, skilled nursing care after a hospital stay, hospice care, and some home health services. Part B covered doctor visits, outpatient care, and some other medical services. Both parts began on July 1, 1966.

The law also created Medicaid at the same time, a separate program for low-income people of any age. Many people confuse the two because they were born from the same legislation, but they are different programs run by different rules.

The original law did not cover prescription drugs, dental care, vision care, or hearing aids. Those gaps remain in traditional Medicare today, though people can buy separate coverage for some of them.

How Medicare has changed since 1965

Congress has changed Medicare many times. In 1972, it added coverage for people under 65 with permanent kidney failure and for some people with disabilities. In 1997, Congress created Part C (Medicare Advantage), which lets people choose a private insurance plan instead of traditional Medicare. In 2006, Congress added Part D, which covers prescription drugs.

Each change came through new laws passed by Congress, not through decisions made by Medicare itself. The program has grown from covering hospital and doctor visits to covering a much wider range of services, though gaps still exist.

Who runs Medicare today

The Centers for Medicare and Medicaid Services (CMS) is the federal agency that runs Medicare. CMS is part of the Department of Health and Human Services. CMS sets the rules for what Medicare covers, how much it pays doctors and hospitals, and who can enroll.

CMS does not make the laws — Congress does. CMS carries out the laws Congress passes. When you have questions about your Medicare coverage or benefits, you are dealing with CMS or one of the private insurance companies that CMS contracts with to process claims and handle enrollment.

The role of private insurance companies in Medicare

Although Congress created Medicare as a government program, private insurance companies have always played a role. In the original 1965 law, Congress hired private insurers to process claims and pay doctors and hospitals on Medicare's behalf. This arrangement continues today.

For Part A and Part B, private companies called Medicare Administrative Contractors (MACs) handle claims. For Part D (prescription drugs), private insurance companies sell the actual plans and collect premiums. For Part C (Medicare Advantage), private insurance companies sell the plans directly to people and receive a payment from Medicare for each person who enrolls.

This means that while Congress created Medicare and CMS oversees it, the day-to-day work of paying claims and managing enrollment happens through private companies under contract.

Why the history of Medicare matters to you

Understanding where Medicare came from helps explain how it works today. Congress created it to solve a specific problem in 1965 — older people could not afford medical care. The program has grown and changed, but that basic purpose remains.

The fact that Congress created Medicare also means Congress can change it. When you hear about proposed changes to Medicare — whether in the news or from a doctor — those changes would have to be passed by Congress as new laws. Medicare itself cannot unilaterally change what it covers or how much it pays.

Frequently Asked Questions

Did President Johnson invent Medicare by himself?

No. President Johnson supported the idea and signed the law, but Congress wrote and passed the Social Security Amendments of 1965 that created Medicare. The bill was shaped by debates in the House and Senate, and by input from hospitals, doctors, insurance companies, and labor unions.

Was Medicare the first government health insurance program in the United States?

No. The Veterans Administration provided health care to military veterans starting in the 1930s. Some states had programs for poor people. But Medicare was the first large federal health insurance program for a broad group of civilians — in this case, all people 65 and older.

Can Medicare be changed without Congress passing a new law?

No. Congress created Medicare through law, and only Congress can change the major rules about what it covers or who can enroll. The Centers for Medicare and Medicaid Services can change some details about how the program runs, but not the fundamental structure.

Why did Congress create both Medicare and Medicaid at the same time?

Congress saw them as solutions to different problems. Medicare was for people 65 and older regardless of income. Medicaid was for low-income people of any age. Both were part of the same 1965 legislation, but they are separate programs with different rules and funding sources.