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TRICARE West Region: 2026 Guide to Plans & Contractors

Everything you need to know about the TRICARE West Region in 2026, including the contractor TriWest, covered states, and how to manage your military health…

TRICARE West Region: 2026 Guide to Plans & Contractors

*Note: TRICARE.com is an independent reference site and is not the official TRICARE program. For official policy and the latest updates, please visit TRICARE.mil.*

## Quick answer "West" refers to the **TRICARE West Region**, one of the two primary administrative geographic areas for military healthcare in the United States. Effective January 1, 2025, and continuing through 2026, the TRICARE West Region is managed by the contractor **TriWest Healthcare Alliance**.

## In detail The West Region encompasses 26 states and is one of the largest healthcare administrative zones in the Department of Defense. Under the current T-5 contract, the West Region contractor manages the provider networks, processes claims, and handles customer service for millions of beneficiaries.

### Geographic Coverage While the East Region covers the Atlantic coast and Midwest, the West Region includes: * **The Pacific States:** Alaska, California, Hawaii, Oregon, Washington. * **The Rocky Mountains:** Colorado, Idaho, Montana, Utah, Wyoming. * **The Southwest:** Arizona, New Mexico, Nevada, Texas (parts including El Paso). * **The Plains & Midwest:** Iowa, Kansas, Minnesota, Missouri (except St. Louis area), Nebraska, North Dakota, South Dakota. * **Additional Areas:** Arkansas, Illinois (Western parts), Louisiana, Oklahoma, and Wisconsin.

### The Role of TriWest Healthcare Alliance As of 2026, TriWest serves as the regional partner for the Defense Health Agency (DHA). Their responsibilities include: * Developing and maintaining the **TRICARE Prime** and **TRICARE Select** network of civilian doctors. * Issuing prior authorizations for specialty care. * Managing the secure patient portal for West Region beneficiaries. * Processing claims for medical services provided by civilian doctors.

### 2026 Plan Options in the West Beneficiaries in the West Region typically choose between: * **TRICARE Prime:** A health maintenance organization (HMO)-like option where care is managed by a Primary Care Manager (PCM). In the West, this is often a military hospital or a TriWest network provider. * **TRICARE Select:** A preferred provider organization (PPO)-like option that allows more flexibility to see any TRICARE-authorized provider without a referral. * **TRICARE For Life:** For those with Medicare Part A & B; TriWest acts as the secondary payer for services in the West.

### 2026 Network Costs (Example) Costs vary based on the sponsor’s initial enlistment date (Group A vs. Group B). * **Active Duty Family Members (Prime):** Typically $0 out-of-pocket for network care. * **Retirees (Select):** Annual enrollment fees apply (e.g., $182.28 or $364.56 per year for Group A in 2026 — *check TRICARE.mil for the most current exact rates*). * **Catastrophic Cap:** Most West Region families have a cap (the most they pay per year) between $1,000 and $4,000 depending on status.

## Who this applies to * **Active Duty Service Members (ADSMs):** Stationed at West Region bases like Joint Base Lewis-McChord, Fort Bliss, or Camp Pendleton. * **Active Duty Family Members (ADFMs):** Living in the 26 Western states. * **Retirees and their Families:** Living in the West, whether using Prime or Select. * **National Guard and Reserve:** Enrolled in TRICARE Reserve Select (TRS) while living in the West Region. * **Young Adult Children:** Enrolled in TRICARE Young Adult (TYA) while residing in the West.

## Common scenarios **1. Moving from East to West** Major Miller moves from Fort Liberty (East) to Fort Carson (West) in May 2026. He must contact TriWest to transfer his family's enrollment. Because he moved regions, his primary care manager will change from a Humana Military provider to a TriWest provider or a military clinic in Colorado.

**2. Seeking Specialty Care in the West** Sarah, a retiree spouse in San Diego, is enrolled in TRICARE Select. She wants to see a dermatologist. Under the West Region rules for Select, she does not need a referral from TriWest. She finds a network provider on the TriWest website and pays her 2026 cost-share (approximately 25% of the allowable charge).

**3. Emergency Care** An Airman's family is on vacation in Seattle (West Region) but is stationed in Florida (East Region). If an emergency occurs, they can go to any West Region ER. Though their "home" contractor is Humana, TriWest providers will coordinate the emergency claim processing through the national TRICARE system.

## Related terms * **TriWest Healthcare Alliance:** The current regional contractor for the TRICARE West Region. * **T-5 Contract:** The fifth generation of TRICARE contracts which reorganized the regions and contractors starting in 2025. * **Humana Military:** The contractor responsible for the TRICARE East Region. * **Regional Contractor:** A private company hired by the government to manage TRICARE benefits in a specific area. * **PCM (Primary Care Manager):** The doctor who handles your basic care and referrals in a Prime plan.

## Sources * **TRICARE.mil - West Region:** https://www.tricare.mil/West * **TriWest Healthcare Alliance Official Site:** https://www.triwest.com/ * **Defense Health Agency (DHA):** https://health.mil/ * **TRICARE Plan Finder:** https://www.tricare.mil/Plans/PlanFinder/