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

President Lyndon B. Johnson signed Medicare into law on July 30, 1965. The program launched on July 1, 1966, covering hospital care, medical services, and some prescription drugs for Americans aged 65 and up. At that time, fewer than half of older Americans had any health insurance at all, and many faced bankruptcy from medical bills.

Medicare was created alongside Medicaid, a separate program for low-income individuals and families. Both programs grew out of the Social Security Act amendments of 1965. The idea had been debated for years — President Harry Truman had proposed something similar in the 1940s, but it took two decades and a shift in political will before Congress passed it.

Key Takeaways

  • Medicare was signed into law on July 30, 1965, and began covering people on July 1, 1966.
  • The program was created because most older Americans lacked health insurance and faced serious financial hardship from medical costs.
  • Medicare originally had two parts: Part A (hospital insurance) and Part B (medical insurance), and both were mandatory for all beneficiaries.
  • The program has expanded several times since 1965, most notably with the addition of prescription drug coverage (Part D) in 2006.

What Medicare looked like when it started in 1966

The original Medicare program had two parts. Part A covered inpatient hospital stays, skilled nursing facility care, hospice, and some home health services. Part B covered doctor visits, outpatient care, medical equipment, and other services. Everyone who turned 65 was enrolled automatically in Part A, and Part B was optional but heavily subsidized by the federal government.

In 1966, about 19 million people enrolled in Medicare during its first year. The program was funded through payroll taxes (the same Social Security tax that funds retirement benefits) and through premiums paid by beneficiaries. Beneficiaries paid a monthly premium for Part B and had to meet an annual deductible before coverage began.

Unlike today, the original Medicare did not cover prescription drugs, dental care, vision care, or hearing aids. These gaps meant older adults still faced out-of-pocket costs for many common needs.

Major changes to Medicare since 1965

Medicare has been modified many times to expand coverage and adjust how it pays providers. In 1972, the program was extended to cover people under 65 who received Social Security disability benefits and people with end-stage renal disease. That same year, Part C (Medicare Advantage) was introduced as an alternative way to receive Medicare benefits through private insurance companies, though it did not become widely available until the 1990s.

The most significant recent change came in 2006, when Part D (prescription drug coverage) was added. This was the first major expansion of Medicare benefits in decades and reflected the growing cost of medications for older adults. Part D is optional and offered through private insurance plans, with the federal government subsidizing a portion of the cost.

In 2020, Congress passed legislation that allowed Medicare to negotiate drug prices directly with pharmaceutical companies — a power Medicare did not have before. This change began taking effect in 2024 and continues to reshape how prescription drug costs are managed.

Why Medicare was created: the problem it solved

Before 1965, older Americans faced a stark choice: pay for medical care out of pocket or go without. Medical bills were the leading cause of bankruptcy among seniors. Many had retired on fixed incomes and could not afford both housing and healthcare. Insurance companies often refused to cover people over 65 because they were seen as too expensive to insure.

Families often had to choose between helping aging parents pay for medical care and paying their own bills. Children sometimes moved in with parents to provide unpaid care because professional care was unaffordable. The creation of Medicare was meant to solve this crisis by guaranteeing that all Americans 65 and older would have access to basic health coverage.

How Medicare has grown since its start

In 1966, Medicare covered about 19 million people. Today, the program covers more than 66 million beneficiaries — not only people 65 and older, but also younger people with disabilities and those with end-stage renal disease. The program's budget has grown from about $3 billion in its first year to hundreds of billions of dollars annually.

The types of services covered have also expanded. Medicare now includes preventive care services like screenings and vaccinations at no cost to the beneficiary. Mental health services, including therapy and psychiatric care, receive more robust coverage than they did in the early years. Home health services and hospice care have become more widely available.

At the same time, Medicare has faced ongoing debates about its financial sustainability. As the population ages and medical costs rise, policymakers continue to discuss how to keep the program solvent while maintaining or expanding benefits.

The difference between Medicare's original design and today

The original 1965 Medicare was simpler in structure but more limited in scope. There were only two parts, and everyone got the same coverage. Today's Medicare is more complex, with four main parts (A, B, C, and D) and many choices about how to receive coverage. Beneficiaries can stay in Original Medicare (Parts A and B) or switch to a Medicare Advantage plan (Part C), and they must choose a separate prescription drug plan (Part D) or face a penalty.

Costs have changed too. In 1966, the Part B premium was about $3 per month. Today, premiums vary based on income and can be several hundred dollars per month. Deductibles and copayments have increased significantly, meaning beneficiaries pay more out of pocket for care than they did in the early years of the program.

Coverage gaps have also shifted. While prescription drugs are now covered under Part D, dental, vision, and hearing care remain largely uncovered by Original Medicare, just as they were in 1966. However, some Medicare Advantage plans now offer these benefits as add-ons.

Frequently Asked Questions

Did Medicare exist before 1965?

No. Before 1965, there was no federal health insurance program for older Americans. Some older adults had private insurance through former employers, but most had no coverage at all. President Truman proposed a national health insurance program in the 1940s, but Congress did not pass it.

Was Medicare mandatory when it started?

Part A (hospital insurance) was mandatory for everyone 65 and older. Part B (medical insurance) was optional, but the federal government subsidized most of the cost, so most people chose to enroll. Today, both parts remain largely mandatory, though people can decline Part B if they have other coverage.

How did Medicare change after 2006?

The addition of Part D in 2006 was the biggest change. Since then, Congress has made smaller adjustments, such as adding preventive care services at no cost and allowing Medicare to negotiate drug prices. The program continues to evolve as lawmakers address cost and coverage concerns.

Why doesn't Medicare cover dental and vision care?

When Medicare was created in 1965, dental and vision care were not considered essential medical services in the same way that hospital and doctor care were. That distinction has never changed in Original Medicare, though some Medicare Advantage plans now offer these benefits as optional add-ons.

How many people were on Medicare when it started?

About 19 million people enrolled in Medicare during its first year in 1966. This represented most Americans 65 and older at that time. Today, Medicare covers more than 66 million people, including not only older adults but also younger people with disabilities and those with end-stage renal disease.