For Physicians: Insurance Preauthorization


For preauthorization questions for the TRG billing office, contact us at:

503-292-9108 extension 236 (7:45 am-4:15 pm, M-F), or

TRG, LLC Billing Office
P.O. Box 25180
Portland, OR 97298-0180

Most insurers now require pre-authorization for all advanced medical imaging such as MRI, CT, PET and other Nuclear Medicine studies.

The major carriers that require authorization are: BC/BS of Oregon, Cigna, DMAP (Oregon Health Plan and any Managed Medicaid plan), Great West Life, Healthnet, Lifewise, ODS Health Plans, Pacificare, Providence Health Plans / Providence Preferred Plans, Secure Horizons and United Healthcare.

Due to contract requirements with the insurance companies, pre-authorization is required to be obtained by the referring physician office. Your staff should be able to determine if pre-authorization is required by looking at the back side of the patient's insurance card. If your staff is unsure as to whether an exam requires preauthorization, they can contact the insurer directly or call the TRG billing office at 503-292-9108 ext 236 for assistance.