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Contact EDI Support Services

All hours of Operation are listed in Central Standard Time.

EDI Support Services Closure Schedule


EDI Support Services Help Desk


Medicare Part A and B
Jurisdiction E (CA, HI, NV, American Samoa, Guam and Northern Mariana Islands): 855-609-9960
Jurisdiction F (AK, AZ, ID, MT, ND, OR, SD, UT, WA, WY): 877-908-8431

ND Medicaid

Hours of Operation

Monday - Friday 8:00 A.M. - 7:00 P.M. (CT)
See Training Closure Schedule



Mailing Address

EDI Support Services
PO Box 6729
Fargo, ND 58108-6729


For non-critical questions or issues:
For concerns or praise to EDISS management:

Be sure to include the following when contacting us via email:

  • Your name
  • Business name and location
  • NPI
  • Business phone number and extension
  • Complete description of your issue

To ensure delivery to your inbox, please add these addresses to your address book or safe list.

Do not e-mail requests to EDISS for issues such as the status of a claim or remittance or questions about claim processing and denials. EDISS does not handle such inquiries.

Note: Gateway and Connect access questions cannot be done via email, please call the appropriate phone number for assistance.


DME EDI Contact Info

Jurisdictions A and D National Government Services
8:00 a.m. - 8:00 p.m. (CT)


CMS EDI Education