TRICARE and Military Bases: A Complete Guide to MTFs

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## Quick answer In the TRICARE system, "Bases" (Military Treatment Facilities or MTFs) serve as the primary hub for healthcare delivery. Whether you live on or near a base determines your eligibility for TRICARE Prime, your priority for appointments, and whether you receive care for free or pay out-of-pocket cost-shares.

## In detail Military Bases house the **Military Treatment Facilities (MTFs)**—the clinics and hospitals staffed by military and civilian government personnel. Your proximity to a base is the single most important factor in how you interface with your health insurance.

### PSAs (Prime Service Areas) A Prime Service Area is generally a 40-mile radius around a military base or a base that was closed during previous realignment cycles. * **Living in a PSA:** You generally must enroll in **TRICARE Prime** if you want to maximize your benefits. * **Living outside a PSA:** You may be forced to use **TRICARE Select**, or you may be eligible for TRICARE Prime Remote if you are Active Duty.

### Priority of Care at Base Hospitals Not everyone has the same right to see a doctor on base. TRICARE follows a strict "Priority for Care" hierarchy: 1. **Priority 1:** Active Duty Service Members (ADSMs). 2. **Priority 2:** Family members of ADSMs enrolled in TRICARE Prime. 3. **Priority 3:** Retirees, their families, and survivors enrolled in TRICARE Prime. 4. **Priority 4:** Family members of ADSMs NOT enrolled in TRICARE Prime (TRICARE Select). 5. **Priority 5:** Retirees and their families NOT enrolled in TRICARE Prime (TRICARE Select).

### Moving Between Bases When moving (a PCS - Permanent Change of Station), your TRICARE coverage does not automatically follow you to the new base. You must update your address in **DEERS** and contact your new regional contractor (Humana Military for East, TriWest Healthcare Alliance for West) to transfer your enrollment.

## Who this applies to * **Active Duty Service Members:** Required to receive care at the base MTF unless referred out. * **Active Duty Families:** Can choose between TRICARE Prime (base-centric) or TRICARE Select (civilian-centric). * **Retirees under 65:** Priority for base care is limited; many are "space-available" only. * **TRICARE For Life (TFL) Users:** Can use base pharmacies for $0 copays, but primary care is usually handled by Medicare providers off-base.

Common scenarios

**Scenario 1: The Prime Family on Base** The Miller family is stationed at Fort Liberty (East Region). They are enrolled in TRICARE Prime. Because they use the base MTF for all primary care, their out-of-pocket cost for doctor visits in 2026 is **$0**.

**Scenario 2: The Retiree near a Base** Master Sergeant (Ret.) Rodriguez lives 5 miles from Nellis AFB (West Region). He is enrolled in TRICARE Select. He sees a civilian specialist for a $38 copay (2026 Group A rate) but drives onto the base to use the MTF pharmacy to get his maintenance medications for **$0**, saving roughly $16–$43 per prescription compared to retail.

**Scenario 3: Living Remote from a Base** Sergeant Smith is on recruiting duty 100 miles from the nearest base. Because he is not near a base, he is enrolled in **TRICARE Prime Remote**. He sees a local civilian doctor, and TRICARE pays the civilian rate as if it were on-base care ($0 out-of-pocket for the ADSM).

## Related terms * **MTF (Military Treatment Facility):** The actual hospital or clinic located on a military installation. * **PSA (Prime Service Area):** The geographic area (usually 40 miles) surrounding a base where TRICARE Prime is offered. * **DEERS:** The database used to verify identity and TRICARE eligibility. * **Direct Care:** Healthcare provided directly by the military at a base facility. * **Purchased Care:** Healthcare "bought" by TRICARE from civilian providers in the community. * **Space-Available Care:** Care provided to non-Prime beneficiaries at an MTF only when the facility has open slots after Prime patients are seen.

## Sources * **TRICARE.mil MTF Locator:** https://www.tricare.mil/mtf * **Defense Health Agency (DHA):** https://health.mil/ * **TriWest Healthcare Alliance (West Region):** https://www.triwest.com/ * **Humana Military (East Region):** https://www.humanamilitary.com/