The transition to a new Tricare management contractor has been anything but smooth for many health care providers and patients in the West Region.

Another 10% of provider calls were from those - mostly providers in the six states that were moved to Tricare West Region coverage - who weren't aware they should call TriWest, according to ...

As of January 1, 2025, TriWest became the new provider network for the Western Region, comprised of 26 states, including Colorado, overseeing 4.3 million eligible TRICARE beneficiaries.