International SOS: TRICARE Overseas Contractor Guide 2026

TRICARE Overseas Program (TOP) services are managed by International SOS (ISOS), the designated contractor for all beneficiaries living outside the United States. TRICARE.com is an independent reference site and is not affiliated with the official TRICARE program or International SOS; for official government information, visit [TRICARE.mil](https://www.tricare.mil).

## Who they are International SOS Government Services, Inc. is the global contractor responsible for administering the TRICARE Overseas Program (TOP) under a contract with the Defense Health Agency (DHA). They have managed the overseas region for over a decade, with the current iteration of the contract (TOP 2021) continuing their role as the sole provider for healthcare support services across three massive geographic regions.

## What they do International SOS acts as the bridge between military beneficiaries and foreign healthcare systems. Their primary services include: * **Provider Network Management:** Recruiting and vetting "purchased care" providers in foreign countries to ensure they meet Western medical standards. * **24/7 Medical Assistance:** Operating regional call centers that provide medical advice and emergency assistance in multiple languages. * **Claims Processing:** Paying medical claims for services rendered outside the 50 United States and the District of Columbia. * **Medical Evacuation:** Coordinating emergency air medevac services for beneficiaries in remote locations to higher levels of care. * **Prior Authorization:** Reviewing and approving specialty care requests to ensure they are covered under TRICARE policy. * **Translation Services:** Providing bedside translation or document translation for medical records.

## How to reach them Because International SOS covers the entire world, contact information is categorized by your specific geographic location.

* **Member Portal:** [www.tricare-overseas.com](https://www.tricare-overseas.com) * **Mobile App:** TRICARE Overseas (available on iOS and Android) * **Phone (Regional Call Centers):** * **Eurasia-Africa:** +44-20-8762-8384 (Direct) / 1-877-678-1207 (Stateside) * **Latin America & Canada:** +1-215-942-8393 (Direct) / 1-877-451-8659 (Stateside) * **Pacific:** +65-6339-2676 (Direct) / 1-877-678-1208 (Stateside) * **Claims Mailing Address:** TRICARE Overseas Program P.O. Box 7985 Madison, WI 53707-7985 USA

## Service area International SOS manages all areas outside the 50 United States and the District of Columbia. They divide the world into three primary sectors: * **TOP Eurasia-Africa:** Europe, Africa, and the Middle East. * **TOP Pacific:** Asia, Australia, Guam, Korea, and Japan. * **TOP Latin America & Canada:** Canada, Mexico, Central/South America, the Caribbean, and Puerto Rico.

## Common issues & how to escalate Navigating healthcare in a foreign country often presents unique challenges. Common issues include:

1. **Upfront Payment Requirements:** Many overseas providers require payment in full at the time of service, even if you have TRICARE. If a provider refuses to bill ISOS directly, you must pay out of pocket and file a claim for reimbursement. 2. **Currency Fluctuations:** Claims are often filed in local currency and reimbursed in USD. Discrepancies can occur based on the exchange rate used on the date of service. 3. **Language Barriers in Claims:** Medical notes written in foreign languages can delay claims processing. ISOS provides translation, but it can add 30+ days to the timeline.

**Escalation Path:** * **Step 1:** Contact the specific Regional Call Center (Eurasia-Africa, Pacific, or Latin America) and speak with a Customer Service Representative. * **Step 2:** Request a "Grievance Coordinator" if your issue involves quality of care or a specific provider. * **Step 3:** If the issue remains unresolved, contact the TRICARE Area Office (TAO) Director for your specific region; these are government-run offices that oversee the ISOS contract.

## Sources * **TRICARE.mil Overseas Coverage:** [https://www.tricare.mil/overseas](https://www.tricare.mil/overseas) * **International SOS TRICARE Portal:** [https://www.tricare-overseas.com/](https://www.tricare-overseas.com/) * **Defense Health Agency (DHA):** [https://health.mil/](https://health.mil/)