TRICARE West Region Transition

TRICARE began delivering health care under its new regional contracts on Jan. 1, 2025. The TRICARE West Region contractor has changed from Health Net Federal Services, LLC to TriWest Healthcare Alliance. Use the guide below to help you understand which contractor can help you with your TRICARE-related questions.

West Region Contractor Health care delivery How to contact
TriWest Healthcare Alliance Health care delivery by TriWest started Jan. 1, 2025

888-TRIWEST (888-874-9378)

www.tricare.mil/west
Health Net Federal Services, LLC Health care delivery by HNFS ended Dec. 31, 2024 HNFS's customer support line ended April 30, 2025.

www.tricare-west.com

Limited services through June 30, 2025. See below for details.

 

General & Enrollment

I Need To... What To Do
Ask a general question about TRICARE Contact TriWest.
Enroll in TRICARE or make an enrollment change
 Go to Beneficiary Web Enrollment or contact TriWest.
Make an enrollment payment/set up automatic payments

Contact TriWest.

 
Change my primary care manager

Go to milConnect or contact TriWest. Learn more about changing your PCM.

Provider Network

I Need To... What To Do
Find a provider or check if a provider is in the TRICARE network Check TriWest's directory.
Get added as a TRICARE provider Contact TriWest about joining the TriWest West Region network to provide care on or after Jan. 1, 2025 by visiting https://joinournetwork.triwest.com.

Claims

I Need To...  What To Do
Submit a claim
  • Starting May 1, 2025, submit all claims to TriWest.
Check claim status
  • If the date of service is before Jan. 1, 2025, AND the claim was submitted to HNFS by April 30, 2025, check with HNFS:
    • Online through June 30, 2025
  • Starting May 1, 2025, check with TriWest on all other claims.
AppealThe action you take if you don’t agree with a decision made about your benefit. a denied claim
  • Starting May 1, 2025, submit all appeals to TriWest.

Referrals/Authorizations

I Need To... What To Do
Submit a referral or authorization request

Submit to TriWest.

 
Check referral or authorization status

Check with TriWest.

Notes:

  • TriWest will accept HNFS-issued referrals and pre-authorizations through their expiration date or Sept. 30, 2025, whichever comes first.
  • TriWest will accept Autism Care Demonstration referrals and pre-authorizations through the date issued by HNFS.
Appeal a denied authorization Submit a medical necessity appeal to TriWest.

Website

I Need To... What To Do
Access my secure portal
  • Access some HNFS-specific secure tools at www.tricare-west.com past Dec. 31, 2024, including:
    • Authorization status (through April 30, 2025)
    • Claims status (through June 30, 2025)
    • Note: These will only show authorizations and claims processed by HNFS.

Last Updated 5/5/2025