Why Enroll In Medicare Part D? 
Enrollment in Medicare Part D is to help pay for prescription drugs . Medicare Part A pays for hospitalization , skilled nursing care , home health , and hospice . Medicare Part B pays for medically necessary and preventative services , plus medical equipment , mental health treatment , ambulance , and limited outpatient drugs . Prescription drugs can be a huge part of health care costs , so Medicare Part D helps offset that part of health care costs . 