When can I sign up for Medicare?
Initial enrollment period
You can first sign up for Medicare during a seven-month period around your 65th birthday. It starts three months before your birthday, includes the month of your birthday and ends three months after you turn 65.
If you sign up for Medicare during the three months before your birthday, your coverage will start the first day of your birthday month. If you enroll in Medicare during or within three months after your birthday month, your coverage will start the first day of the next month.