If you are already eligible or enrolled in an Original Medicare plan, you will also be able to enroll in a Medicare prescription drug plan, also known as Medicare Part D. However, you will have to look at each plan separately to see what the specific rules are, as there may be different requirements and fees associated with each plan. Medicare Supplemental Insurance policies are sold by private Medical Insurance companies, which allow them to set their own fees. It’s best to enroll in this type of plan as soon as you are eligible. By enrolling early, you will have your ID card to purchase prescription drugs as soon as your coverage starts up. If you don’t enroll during this initial period of eligibility, by contrast, you may have to pay a late fee.

The initial enrollment period for any Medicare plan begins three months before you turn 65. It then continues for seven months past this period. If you miss this initial enrollment, you can also choose to enroll in Medicare Part D during the Annual Enrollment Period, which typically occurs at the end of each year. By staying on top of these enrollment periods, you can ensure that you don’t have any lapses in your prescription drug coverage.