Individuals aged sixty-five or older eligible for Social Security can enroll in which Medicare Part without premium payments?

Individuals aged sixty-five or older who are eligible for Social Security can enroll in Medicare Part A without having to make premium payments. This is because Part A is generally offered at no cost to those who have worked for a certain number of quarters (typically 40 quarters, equivalent to ten years) in jobs covered by Social Security. This benefit reflects the contributions made via payroll taxes throughout their working lives, which fund Medicare.

In contrast, other parts of Medicare, such as Part B, Part C, and Part D, generally require monthly premiums for enrollment, making Part A a unique component that ensures access to hospital insurance with no premium costs for eligible individuals.