Medicare PECOS Enrollment: Step-by-Step for Physicians

Medicare PECOS Enrollment Steps

1. Verify NPI is correct — Check NPPES.CMS.HHS.gov; address must match practice location
2. Complete CAQH ProView — Medicare queries CAQH for credential verification
3. Identify your MAC — Each state has a Medicare Administrative Contractor that processes enrollment
4. Complete CMS-855I — Individual practitioner enrollment form
5. Complete CMS-855B — Group/organizational enrollment (if billing under group NPI)
6. Complete CMS-855R — Reassignment of benefits from individual to group NPI
7. Submit EFT authorization — Required for Medicare electronic payments
8. Track in PECOS portal — Application status updates available online
9. Receive PTAN — Provider Transaction Access Number issued upon approval

Related: Medicare enrollment services | Medicare checklist tool.