Eastern Radiological Associates (ERA) is a professional partnership of board-certified radiologists who use advanced technologies to provide radiology services to the community.

Radiologists are doctors specifically trained in medical imaging and interpretation. Education and experience help ensure you receive the best care, always.


Meet the Radiologists


Brett MacAdam, MD

Dr. MacAdam is a board-certified, fellowship trained musculoskeletal radiologist with a broad range of interest including sports medicine, neuroradiology, orthopedic and trauma cases.

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Board certified radiologists

Our mission is simple

Eastern Radiological Associates serves the patient and physician community of the region (Montana, Wyoming, and surrounding) by providing the highest quality diagnostic imaging and interventional services in a caring and compassionate atmosphere.

The Interventional Radiology Clinic (IR Clinic) is operated by Dr. Christenson as part of Eastern Radiological Associates. The IR Clinic is independent, but all state-of-the-art procedures are performed in specialized areas at St. Vincent Healthcare. Most patients are referred to the IR clinic by oncologists, nephrologists, or other treating physicians and professionals, however, patients may also be self-referred.

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Radiology Services We Offer

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