New Medicare enrollment: Which forms do I need to complete?

CMS' internet-based PECOS (Provider Enrollment, Chain and Ownership System) web system supports the Medicare enrollment process by capturing provider / supplier information from the CMS-855 family of forms. The system manages, tracks, and validates enrollment data electronically via the internet. 

To facilitate your application process, we encourage you to use the online, scenario-driven process in internet-based PECOS instead of the paper application process outlined in the table below.

Need help choosing forms? Try our Enrollment Application Assistance Tool

Type of provider 855A 855B 855I 20134 588 460 8292
Individual or Sole Proprietor (Not Incorporated)     Green checkmark = required   Green checkmark = required Blue circle with / - Optional Blue circle with / - Optional
Individual Provider (Incorporated)     Green checkmark = required   Green checkmark = required Blue circle with / - Optional Blue circle with / - Optional

Clinic or Group Practice 

 

  Green checkmark = required     Green checkmark = required Blue circle with / - Optional Blue circle with / - Optional
Organization Part B   Green checkmark = required     Green checkmark = required Blue circle with / - Optional Blue circle with / - Optional
Medicare Diabetes Prevention Program Suppliers       Green checkmark = required Green checkmark = required   Blue circle with / - Optional
Institutional Provider Part A

Green checkmark = required

 

      Green checkmark = required   Blue circle with / - Optional
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855A

 

855B 855I 20134 588 460 8292 

 Green checkmark = required = Required               Blue circle with / - Optional = Optional