National Imaging Associates, a Magellan Health Services Company
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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 

Physical Medicine

Beginning September 1, 2018, any provider that is performing physical therapy, occupational therapy or chiropractic services must contact NIA for prior authorization.  (Delaware, New York, Pennsylvania, West Virginia)

Prior authorization will be required for Aetna New Jersey and western New York effective January 1, 2019.

Effective August 1, 2019, CPT Codes 98925 - 98929 for Osteopathic Physicians do not require prior authorization for Aetna Members.


New Jersey

 New York 

Western New York


West Virginia


RadMD User References

Recorded General Trainings

Recorded RadMD Demos

Physical Medicine Guidelines

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

MCG Guidelines®