TriWest Healthcare Alliance

TriWest Healthcare Alliance is the managed care support contractor responsible for administering TRICARE in the West Region. TriWest manages the provider network, processes claims, handles customer service, and coordinates care for TRICARE beneficiaries in western states.

TriWest services include: • Provider network development and management • Claims processing and payment • Beneficiary customer service • Referral and authorization processing • Online tools and resources • Appointment scheduling assistance

States covered by TriWest (West Region): • All states west of the Mississippi River • Alaska, Hawaii, and U.S. territories in the Pacific

How to contact TriWest: • Phone: 1-844-866-WEST (9378) • Website: triwest.com • Secure online portal for account management

TriWest operates under contract with the Defense Health Agency to deliver TRICARE services to West Region beneficiaries. They maintain an extensive network of civilian healthcare providers and work closely with Military Treatment Facilities to ensure seamless care coordination for all eligible beneficiaries in their region.