Provider Enrollment Contact Center

Noridian Customer Service requires providers to use the Enrollment Application Status Search self-service tool to access application related details.

The Enrollment Application Status Search tool allows providers and suppliers to follow his/her enrollment application progress. Simply enter the Application/Reference Number or Web Tracking ID into the search field and select "View Application Status."

Customer Service Representative (CSR)

To decrease call wait times and direct calls through our IVR system to the most appropriate department, callers must authenticate with their National Provider Identifier (NPI), Provider Transaction Access Number (PTAN) and Taxpayer Identification Number (TIN).

  • Provider Enrollment: M-F 8 a.m. - 6 p.m. CT


TTY: 877-261-4163 (M-F 8 a.m. - 6 p.m. CT)

CSRs can assist with three (3) below related inquiries per call.

  • Revalidation
  • Application Status
  • PTAN Status
  • General Enrollment Inquiries

Fax or Mail Items to Noridian

May Fax Items Mail Items

See Fax Numbers webpage for Enrollment fax number

  • Pending application corrections or additions
  • Include application reference number on coversheet
  • Request Enrollment Historical Information, such as PTANs or notification letters
  • Corrective Action Plan (CAP) Request

See Mailing Addresses webpage for individual state address. Attn: Enrollment

  • Appeal request
  • CMS Application


External Contacts

Contact Services Offered
National Plan and Provider Enumeration System (NPPES)
  • Apply online for NPI
  • View/Update NPI data

Phone: 800-465-3203
TTY: 800-692-2326
NPI Enumerator
P.O. Box 6059
Fargo, ND 58108-6059

Provider Enrollment, Chain, and Ownership System (PECOS)
  • Request NPI application
  • Submit initial application
  • View/change enrollment information
  • Track enrollment application through web submission process
  • Add /change a reassignment of benefits
  • Submit changes to existing information
  • Reactivate an existing record
  • Withdraw from Medicare Program
  • Submit Change of Ownership

Access PECOS:
Enroll Online: Learn more about PECOS

Internet-based PECOS - External User Services (EUS) Help Desk
  • Issues with User ID/Password and unable to log in
Phone: 866-484-8049
TTY: 866-523-4759
Live Chat: EUS Live Chat
  • Customer Support

Phone: 800-624-1373 (toll free, Option #2)
Hours: 7 a.m. – 7 p.m. Monday - Friday ET

Determining your appropriate Fiscal Intermediary
  • Freestanding Home Health Agencies (HHAs) and Hospices will go to their appropriate Regional Home Health Intermediary (RHHI)

Questions that go to your local state agency
  • State licensure qualifications
  • Specialty type for the services provided
  • Survey status
  • Change-of-Ownership (CHOW) qualifications
Questions that go to your appropriate CMS Regional Office
  • Recommendation status (use name listed on your recommendation letter when searching)
  • Medicare tie-in, tie-out, and/or certification letter


Last Updated Dec 09 , 2023