The Medicare Provider/Supplier Enrollment forms are Office of Management and Budget approved forms and are available in a PDF interactive form field format. These forms include the CMS-855A, CMS-855B, CMS-855I, CMS-855R, and CMS-855S. You can download and complete the application forms on your computer, save it as a file, and then print the completed form for final signature and submission. You are not able to submit the forms electronically at this time. Please mail completed CMS-855 Medicare enrollment forms to the appropriate National Government Services address.