How Much Is Medicare Part D Penalty? 
This penalty is 1 % per month of the national average set by Medicare . Generally this is around $ 35 . This is added each month you do not sign up when you were eligible and did not have creditable coverage from a group or other plan and it never goes away . We suggest picking up a low premium Part D plan even if you do n't currently have any prescriptions . Those penalties will add up over time . 