Faxing to the Correct Fax Number

In order to avoid delays in processing your referral and authorization and other requests, please be sure that you are using the correct TriWest fax number.

Request Type Fax Number
Behavioral Health Prior Authorization Requests 866-269-5892
Case Management Patient Referral Form Northwest Hub – Washington, Oregon, Alaska, N. Idaho 1-866-269-5881

Southwest Hub – California, Nevada, Yuma, Arizona 1-866-269-5828

Mountain Hub – Arizona, El Paso Texas, New Mexico, Utah, Montana, S. Idaho 1-866-269-5819

Central Hub – Colorado, Nebraska, Minnesota, Iowa, N Dakota, S Dakota, Wyoming, Missouri, Kansas 1-866-312-5840

Hawaii Hub – Hawaii 1-866-269-5814

Corporate Office – All Transplant, Hospice and Cancer Clinical Trial Referrals 1-866-269-5758
Condition Management Notification Form 866-312-5839
Consult Tracking Refer to the servicing provider referral/authorization approval letter or fax cover sheet for appropriate fax number.
Medical/Surgical Referral Authorization Requests
Referral/Authorization Request for Prime and Standard beneficiaries 866-269-5892
Referral/Authorization Request for TRICARE Prime Remote and TRICARE Reserve Select 866-312-5831
Referral/Authorization Request for Hospice, Transplant and Cancer Clinical Trials 866-269-5758

If you have any other questions about faxing to TriWest, please refer to www.triwest.com or call 1-888-TRIWEST (888-874-9378).