National Imaging Associates ― Diagnostic Imaging Services

AmeriHealth Caritas Next has entered into an agreement with National Imaging Associates, Inc. (NIA), a subsidiary of Magellan Health, to manage diagnostic imaging services such as MR/CT/PET.

The program will require prior authorization from NIA for nonemergent outpatient:

  • CT/CTA
  • CCTA
  • PET Scan
  • Myocardial Perfusion Imaging
  • MUGA Scan

The physician ordering the procedures noted above is responsible for obtaining prior authorization. The rendering facility must ensure that prior authorization was obtained.

We recommend that you develop a process to ensure that the appropriate authorization number(s) has been obtained. Payment to the ordering physician and rendering facility will be denied for procedures performed without necessary authorization.

Providers can request prior authorization via the internet at or by calling NIA at 1-800-424-4792.

If you have questions about submitting a prior authorization, please call the number above or reference the following materials: