Medicare is a nationwide federally administered health insurance program for eligible individuals, usually age 65 and older. Medicare has three parts: Medicare Part A covers inpatient hospital costs; Medicare Part B covers outpatient medical and physician costs; and Medicare Part D covers prescription drug costs.
Most people receive Medicare Part A premium free because they or a spouse paid Medicare taxes while they were working. Everyone must pay the Medicare Part B premium. If you or your spouse did not pay the Medicare tax while you worked and you’re age 65 or older, you can request to purchase Medicare Part A or you may qualify for the CalSTRS Medicare Premium Payment Program.