If you don't sign up for the IEP for Medicare, you can still enroll. You'll be enrolled during what's known as the Medicare general enrollment period. Don't worry about seeing a doctor or filling a prescription, your Medicare coverage will continue uninterrupted even if you miss the deadline. Your current insurance options will be automatically renewed and there will be no gaps in your coverage. In most cases, if you missed the Part B enrollment period, which ranges from the three months before the month you turned 65 to the three months after the month you turned 65, you will be charged a late enrollment penalty once you enroll, which will be added to the premium costs for the rest of your enrollment.
The fine is equivalent to 10% of the standard monthly premium for each 12-month period in which delay enrollment.
