Medicare Part D is prescription drug coverage. It helps pay for the medications your doctor prescribes. Medicare prescription drug coverage is available in two ways. Original Medicare (Parts A and B) does not cover prescription drugs. Many people who choose Original Medicare add Part D to their plan. If you have Medicare Part C, you can get prescription drug benefits by enrolling in a Medicare Advantage plan that includes this coverage. These plans give you the option to get your Medicare health and prescription drug benefits covered under a single plan. Medicare Part D coverage is available through private insurance companies that are contracted by Medicare, so costs and availability may differ between Medicare plans, insurance companies, and location.
Medicare Part D Plans are required to cover certain common types of drugs, but each plan may choose which specific drugs it covers. The drugs you take may not be covered by every Part D plan.
You can enroll in Medicare Part D coverage during your Initial Enrollment Period, which is the period that you first become eligible for Medicare Part D. For most people, this is the same time for Medicare Part B and begins three months before you turn 65 years of age, includes the month you turn 65, and ends three months after.