Can I Cancel My Medicare Part D? 
You can only drop or change your plan during open enrollment . I highly discourage dropping Part D completely . There are very inexpensive plans available if you do not have many prescriptions . Medicare will impose a penalty for every month that goes by that you were eligible for but not enrolled in Part D . This can become very expensive , especially as your health deteriorates and you begin to take more prescriptions and need the Prescription drug plan . The penalty never goes away unless you qualify for Low Incom Eubsidy or Medicaid . 