You typically qualify if you or your spouse worked and paid Medicare taxes for at least 10 years (40 quarters).
You can apply during several specific windows to avoid late enrollment penalties. how to buy medicare part a
A 7-month window starting 3 months before the month you turn 65, including your birth month, and ending 3 months after. You typically qualify if you or your spouse
Before you "buy," verify if you are already entitled to premium-free coverage. including your birth month