National Imaging Associates, a Magellan Health Services Company
Welcome to RADMD

All Health Plans



Welcome to the Aetna page. Here you can access useful materials about the program.

Aetna has selected National Imaging Associates, Inc. (NIA) to provide utilization management for physical medicine. Beginning September 1, 2018, for Delaware, New York, Pennsylvania and West Virginia, providers must request prior authorization for physical therapy, occupational therapy and chiropractic services through NIA at

Refer to the state-specific CPT Matrix document below to view specific codes managed by NIA.

If you have any questions about the NIA Program, please contact your dedicated NIA Provider Relations Manager:

News and Updates 


New Jersey

 New York 

Western New York


West Virginia


RadMD User References

Recorded General Trainings

We have a series of training videos that discuss the components of requesting a prior authorization request. Click here to access these videos.

Recorded RadMD Demos

Need additional help using RadMD? Click here to access a series of RadMD demos that demonstrate how to properly submit a prior authorization request.

Physical Medicine Guidelines

Refer to the state-specific CPT Matrix document above to view specific codes managed by NIA.

MCG Guidelines®

Clinical Training Modules

We have a series of clinical training modules that will help you avoid delays and ensure that you have the right information before submitting your prior authorization request. Click here to access them.

Update on COVID-19

Click here to view our recommendations on the use of CT to detect Coronavirus (COVID-19).