366th Medical Group Mountain Home AFB TRICARE Guide
*TRICARE.com is an independent reference site and is not the official TRICARE program. For official policies and real-time updates, please visit TRICARE.mil.*
## Quick answer The 366th Medical Group, also known as the Gunfighter Medics, operates the MTF (Military Treatment Facility) at Mountain Home AFB, Idaho. It provides primary and specialty care to active duty members, their families, and retirees under the TRICARE West Region, currently managed by TriWest Healthcare Alliance.
In detail
The 366th Medical Group serves as the primary healthcare hub for the Elmore County military community. Unlike larger military medical centers, Mountain Home is an outpatient-focused facility with specific capabilities. If the 366th cannot provide a specific service, patients are referred to civilian networks in the Boise/Mountain Home area.
### Available Services The facility offers a range of services primarily focused on readiness and family health, including: * **Family Health & Pediatrics:** Routine exams, immunizations, and acute care. * **Flight Medicine:** Specialized care for aircrew and occupational health. * **Dental:** Active duty priority; limited emergency care for dependents. * **Pharmacy:** On-site prescriptions and refills (Express Scripts handles mail-order). * **Mental Health:** Counseling, ADAPT, and Family Advocacy. * **Laboratory and Radiology:** Basic diagnostic imaging and blood work.
### TRICARE Regional Management As of May 2026, Mountain Home AFB falls under the **TRICARE West Region**. Since January 1, 2025, **TriWest Healthcare Alliance** has served as the regional contractor under the T-5 contract. Beneficiaries must coordinate specialty referrals through TriWest if the 366th Medical Group cannot fulfill the requirement.
### 2026 Costs and Access Costs at the 366th Medical Group depend on your TRICARE plan and beneficiary category (Group A vs. Group B):
| Plan Name | Active Duty | ADFMs (Prime) | Retirees (Select) | | :--- | :--- | :--- | :--- | | **TRICARE Prime** | $0 Copay | $0 Copay | Small enrollment fee; small copays | | **TRICARE Select** | N/A | $0 at MTF; Copays at civilian | Deductibles & Percentage of cost |
*Note: For 2026, Active Duty Service Members and their families enrolled in Prime pay $0 for any covered care received at the 366th Medical Group.*
### The Pharmacy The 366th Medical Group pharmacy is a high-traffic area. While prescriptions from on-base providers are filled directly, civilian prescriptions can often be transferred to the base to avoid the copays associated with retail pharmacies (like Walgreens or CVS). In 2026, filling a generic script at the base pharmacy remains **$0**, whereas retail pharmacies charge significantly more.
## Who this applies to * **Active Duty Airmen:** Required to receive primary care at the 366th Medical Group. * **Active Duty Family Members (ADFMs):** Can enroll in TRICARE Prime to prioritize appointments at the base or Select to use local civilian doctors. * **Retirees:** Space-available access for primary care; typically utilize the pharmacy for $0 copays. * **National Guard/Reserve:** Residents in the Mountain Home area on active orders for more than 30 days.
Common scenarios
**Scenario 1: Routine Pediatric Care** An Active Duty Staff Sergeant (Group B) takes their daughter to the 366th Medical Group for a wellness check-up. Because they are enrolled in **TRICARE Prime**, the total cost for the visit, including any required vaccinations, is **$0**.
**Scenario 2: Specialist Referral (Dermatology)** A military spouse enrolled in TRICARE Prime visits their primary care manager (PCM) at Mountain Home AFB for a skin issue. The 366th does not have an on-site dermatologist. The PCM submits a referral to **TriWest**. The spouse sees a civilian specialist in Boise. In 2026, the copay for this authorized specialist visit is **$0** because they are an ADFM on Prime.
**Scenario 3: Retiree Prescription** A retired Master Sergeant living in Mountain Home uses a civilian doctor for chronic blood pressure medication. Instead of paying the 2026 TRICARE retail pharmacy copay (approx. $16–$43), they have the doctor send the script to the **366th Medical Group pharmacy**, where the cost is **$0**.
## Related terms * **TriWest Healthcare Alliance:** The contractor managing the TRICARE West Region as of 2025. * **PCM (Primary Care Manager):** Your assigned doctor at the 366th Medical Group who coordinates all your care. * **MTF (Military Treatment Facility):** A hospital or clinic located on a military installation. * **DEERS:** The database used to verify TRICARE eligibility; must be kept updated to use the 366th's services. * **Express Scripts:** The pharmacy benefit manager that handles TRICARE prescriptions globally.
## Sources * 366th Medical Group Official Site: [https://mountainhome.tricare.mil/](https://mountainhome.tricare.mil/) * TRICARE West Region (TriWest): [https://www.triwest.com/](https://www.triwest.com/) * Official TRICARE Site: [https://www.tricare.mil/](https://www.tricare.mil/)