NPI How to Apply

You can apply for your National Provider Identifier (NPI) in one (1) of three (3) ways:

1. Online Application

2. Mail. You may prepare a paper application and send it to the NPI Enumerator at the following address:

NPI Enumerator
P.O. Box 6059
Fargo, ND 58108-6059

3. Third Party: With your permission, an organization may submit your application in an electronic file. This could mean that a professional association or perhaps a health care provider who is your employer could submit an electronic file containing your information and the information of other health care providers

Contact Information:

Contact Fox Systems directly with questions regarding the processing of an NPI application.


  • (800) 465-3203 (NPI Toll-free)
  • (800) 692-2326 (NPI TTY)


If you have questions regarding other aspects of the legislation and regulation, or other HIPAA-related materials, please contact the CMS HIPAA Hotline at 1-866-282-0659.