Whom should I contact with Medicare questions?


Answer:
The table below is a guide to assist suppliers in contacting the correct Medicare contractor when questions arise regarding specific topics.

Contact the NPWest with
questions regarding

Contact your DME MAC
with questions regarding

Contact Chags Health Information Technology LLC (C-HIT)
with questions regarding

Contact the CMS External
User Services (EUS) Helpdesk
with questions regarding 

  • The CMS 855S application form
  • The DMEPOS enrollment process
  • Site visits
  • Licensure requirements
  • The Medicare DMEPOS supplier standards
  • Education opportunities
  • Electronic Funds Transfer (EFT) enrollment or updates
  • Changes in supplier information
  • 'DNF' (do not forward) issues/updates
  • Reactivation of billing privileges
  • Supplier fraud and abuse
  • Voluntary termination of billing privileges
  • Fraud and abuse
  • Claims processing
  • Payment questions and issues
  • EDI / electronic claims processing
  • Documentation requirements
  • Pricing
  • Appeals process for claims payments
  • Fraud and abuse
  • Appeal process (for denied/revoked billing privileges)
  • Rebuttal process
  • PECOS navigation or systems issues

For NPWest contact information, click here.

Also, many of your billing questions may be answered by reviewing the information contained on your DME MAC's respective websites. Please click on the appropriate link below to review the information available on these websites.

Suppliers may also contact their DME MAC with questions regarding:

  • Education via on-site visits (some DME MACs may not offer)
  • Educational workshops and seminars
  • Clarification on billing instructions
  • Guidance on problem-solving approaches to claims and billing

For questions related to the appeals/rebuttal process, contact C-HIT:

  • Fax: 866-410-7404
  • Phone: 800-245-9206
  • Email: PEARC@c-hit.com
  • Mailing Address: P.O. BOX 45266, Jacksonville, FL 32232

For PECOS related questions, contact the EUS Help Desk at (866) 484-8049.

For information regarding benefit integrity or medical review issues, please contact the Unifed Program Integrity Contractor (UPIC) responsible for your state.


Last Updated: 03/21/2025