What is a medicare supplemental plan?

Medicare supplemental plans, also known as Medigap, do not include prescription drug coverage. Therefore, if you want prescription drug coverage, you need to enroll in a stand-alone Medicare Part D plan.

Even if you don't currently take prescription drugs, it's important to consider enrolling in a Part D plan when you first become eligible for Medicare. If you don't enroll in a Part D plan when you're first eligible, you may have to pay a penalty if you decide to enroll later.