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Provider Enrollment Contact Center

Contact our Enrollment Customer Service Representatives (CSRs) at 855-609-9960

TTY: 855-549-9874

Hours of Availability

  • The Contact Center is staffed to respond to inquiries for each of these areas during ordinary hours of operation from 6 a.m. – 5 p.m. PT
  • General IVR inquiries available 24/7

CSRs may assist callers with the following

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

Items that may be faxed into Noridian

Fax: 701-277-7866

  • 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

Mail the following items into Noridian

Visit Mailing Addresses webpage to retrieve 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
Website: This link will take you to an external website.
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 This link takes you to an external website.
Website: This link takes you to an external website.
  • 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) This link will take you to an external website.

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 This link will take you to an external website.


Last Updated Aug 18, 2017