Be enrolled in Medicare Part A and/or Part B
Choose a Medicare Part D plan from a private insurer approved by Medicare
Use Medicare’s Plan Finder at Medicare.gov to compare plans
Contact the plan directly to enroll online, by phone, or by mail
Enroll during your Initial Enrollment Period, Annual Open Enrollment Period, or a Special Enrollment Period
Have your Medicare number and Medicare card ready
Confirm the plan’s monthly premium, deductible, copays, and covered drugs before enrolling