FISS DDE Provider Online Guide


Purpose of FISS/DDE Provider Online Guide

This provider online guide was created to assist National Government Services providers in using the FISS/DDE Provider Online System.


  • an application that allows remote users connectivity to Medicare mainframe,
  • used by National Government Services to process claims and maintain beneficiary and provider records, and
  • used by providers to:
    • research beneficiary information,
    • make claim coding inquiries,
    • submit, track, correct, adjust and/or cancel claims, and
    • view provider-specific reports.

Note: Not all functions contained in the FISS/DDE Provider Online Guide apply to all states where National Government Services is the Part A MAC.

Revised 4/4/2018