TRICARE Idaho: Gowen Field and West Region Guide (2026) | TRICARE.com

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**Short Answer:** Idaho is part of the **TRICARE West Region**. As of January 1, 2025, the regional contractor is **TriWest Healthcare Alliance**. For service members stationed at Gowen Field in Boise, healthcare is typically coordinated through the 124th Medical Group or a network of civilian providers in the Treasure Valley.

## TRICARE in Idaho Idaho is located entirely within the **TRICARE West Region**. Following the T-5 contract transition on January 1, 2025, **TriWest Healthcare Alliance** serves as the regional contractor, replacing Health Net Federal Services (HNFS). Most Idaho beneficiaries, particularly those at Gowen Field, utilize a mix of military treatment facility (MTF) services and an extensive network of civilian specialists in the Boise, Meridian, and Mountain Home areas.

## Major military installations in Idaho While Idaho does not have a high density of active-duty "mega-bases," it hosts critical Air Force and National Guard hubs:

* **Gowen Field (Boise):** Home to the Idaho National Guard and the 124th Fighter Wing (Air National Guard). * **Mountain Home Air Force Base (Mountain Home):** Home to the 366th Fighter Wing (Gunfighters). * **Idaho National Laboratory (Idaho Falls/Arco):** While a DOE facility, it maintains a military presence for nuclear propulsion training and research. * **Nampa/Caldwell Armed Forces Reserve Centers:** Supporting regional Reserve and National Guard units.

## Plans available in Idaho Beneficiaries in Idaho have access to the following 2026 TRICARE plans:

| Plan | Eligibility | Notes for Idaho Residents | | :--- | :--- | :--- | | **TRICARE Prime** | Active Duty, Guard/Reserve on active orders | Managed care; available near Mountain Home AFB and Boise zones. | | **TRICARE Select** | All eligible beneficiaries | Preferred Provider Organization (PPO) model; offers the most flexibility for those living far from Gowen Field. | | **TRICARE Reserve Select (TRS)** | Selected Reserve members | Premium-based plan for Guard/Reserve members at Gowen Field not on active orders. | | **TRICARE Retired Reserve (TRR)** | Retired Reserve members under age 60 | Premium-based plan for "Grey Area" retirees. | | **TRICARE For Life (TFL)** | Medicare-eligible retirees | Wraparound coverage for Medicare; widely used by retirees in the Boise and Coeur d'Alene areas. | | **TRICARE Young Adult (TYA)** | Adult children ages 21–26 | Available in Prime or Select formats depending on location. |

*Note: The US Family Health Plan (USFHP) is NOT available in Idaho.*

## Finding care in Idaho Because Gowen Field has limited medical capabilities compared to a full-scale hospital, most beneficiaries in the Boise area rely on the TRICARE civilian network.

1. **Provider Directory:** Refer to the [TriWest West Region Provider Directory](https://www.triwest.com) to find "In-Network" providers. Using network providers significantly lowers out-of-pocket costs for TRICARE Select and Reserve Select users. 2. **Mountain Home AFB Hospital:** For complex specialty care, Prime enrollees may be referred to the 366th Medical Group at Mountain Home AFB, located roughly 50 miles southeast of Gowen Field. 3. **Telehealth:** TriWest provides 2026 telehealth options for behavioral health and urgent care, which is particularly useful for beneficiaries in Idaho’s rural northern and eastern counties. 4. **Pharmacy:** Most prescriptions can be filled at the Gowen Field pharmacy (for limited stock), via Express Scripts Home Delivery, or at retail pharmacies like Albertsons, Walgreens, and Rite Aid.

Common questions for Idaho beneficiaries

**I am a National Guard member at Gowen Field. Which plan do I use?** When not on active duty orders (e.g., drill status), you are likely eligible for **TRICARE Reserve Select (TRS)**. If you are activated for more than 30 days, you and your family transition to TRICARE Prime or Select benefits.

**Are there many TRICARE providers in Boise?** Yes. Boise is a major medical hub for the Intermountain West. Most major health systems in the Treasure Valley, including St. Luke’s and Saint Alphonsus, generally participate in the TriWest TRICARE network, though you should always verify at the individual clinic level.

**What happens if I move from Idaho to the East Region?** If you PCS or move to the East Region (e.g., moving from Gowen Field to a base in the East), you must contact **Humana Military** to transfer your enrollment. Your coverage does not move automatically.

## Sources * **TRICARE West Region (TriWest):** [https://www.triwest.com](https://www.triwest.com) * **TRICARE Official Site:** [https://www.tricare.mil](https://www.tricare.mil) * **124th Fighter Wing (Gowen Field):** [https://www.124fighterwing.ang.af.mil](https://www.124fighterwing.ang.af.mil) * **Defense Health Agency (DHA):** [https://health.mil](https://health.mil)