December 2, 2008
Enrollment applications
Medicare provider/supplier enrollment applications (i.e., CMS-855) can be found at http://www.cms.hhs.gov/CMSForms/CMSForms/list.asp#TopOfPage 
(Note: the provider enrollment Web page contains a link "All CMS Forms" and takes you to the main CMS Forms Web page, but does not link directly to each individual form.).
(Note: the provider enrollment Web page contains a link "All CMS Forms" and takes you to the main CMS Forms Web page, but does not link directly to each individual form.).The direct link for each Medicare provider/supplier enrollment application is shown below:
• CMS 855B for Clinics/Group practices and Certain Other Suppliers: http://www.cms.hhs.gov/CMSforms/downloads/cms855b.pdf 
• CMS 855I for Physicians and Non-Physician Practitioners: http://www.cms.hhs.gov/cmsforms/downloads/cms855i.pdf
• CMS 855R for Reassignment of Medicare Benefits: http://www.cms.hhs.gov/cmsforms/downloads/cms855r.pdf
• CMS 855S for Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) Suppliers: http://www.cms.hhs.gov/cmsforms/downloads/cms855s.pdf
Source: CMS frequently asked questions ID 3712
