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  • Enrolling and Reporting Changes

Enrolling and reporting changes

May 31, 2024

Access everything you need to know about initially enrolling or reporting changes to your Medicare enrollment, such as address changes or opting out. Find out which forms you need to complete, where to send them, and our current processing time frames.

Enrollment forms and assistance

  • Enroll in Medicare Online (using PECOS)
  • Medicare enrollment forms (CMS-855, CMS-588, CMS-460)
  • Which enrollment forms do I need to complete?
  • Medicare Participating Physician or Supplier Agreement (CMS-460) Form
  • Individual, sole proprietor/disregarded entity, sole owner, or group practice decision tree
  • Determining your Medicare effective date
  • Required sections on CMS applications
  • Medicare enrollment for mass immunizers
  • Submitting a provider enrollment appeal

Documentation requirements and other resources

  • Documentation requirements for physician and non-physician practitioners
  • Top reasons for immediate returns of enrollment applications
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  • Application fee link
  • Enrollment news

Application processing timeframes and mailing addresses

  • CMS-855 enrollment application processing timeframes
  • Life cycle of an enrollment application
  • Mailing addresses for enrollment forms 

Changing your information (practice name, address, etc.)

  • Changing a practice’s mailing address
  • Voluntarily terminate or deactivate my Medicare enrollment
  • Reporting requirements for a Legal Business Name (LBN) change
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