Home › Forums › BILLERS’ BOARD › Medicare Enrollment This topic has 0 replies, 1 voice, and was last updated 4 years, 4 months ago by Missouri Public Health Association. Viewing 1 post (of 1 total) Author Posts December 29, 2020 at 3:34 pm #12266 Missouri Public Health AssociationKeymaster I am having to re-enroll for Medicare Roster Billing, they are requesting a “letter of responsibility”, does anyone have an example that they would be willing to share? ThanksMegan Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In