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NPI Application

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Centers for Medicare & Medicaid Services (CMS) have contracted with Fox Systems, Inc. to serve as the NPI Enumerator. The NPI Enumerator is responsible for issuing NPIs, resolving issues relating to unique identification and maintaining the National Plan and Provider Enumeration System (NPPES). The NPI Enumerator can be reached at:

  • Phone: 1-800-465-3203 (NPI Toll-Free)
    1-800-692-2326 (NPI TTY)
  • E-mail at:
  • Mail at:
    NPI Enumerator
    PO Box 6059
    Fargo, ND 58108-6059

The NPI Enumerator has created a tutorial called the viewlet to guide you through the application process.

Apply to the Provider Enumerator via one of three ways:

  • Web
  • Paper application