TRICARE West Region managed-care support: ~$13.1B — a contract with UnitedHealth (USAspending)

1Managed care support for the West region

This contract covers managed care support for the West Region of TRICARE, the health program for service members and their families (T3 Managed Care Support Contract for West Region).

2Regions as the operating structure

TRICARE, the military health program, is operated by dividing the country into regions, with a private insurer taking on managed-care support in each. This contract covers the "West Region." Viewed alongside the Humana contracts this site has compiled (including the largest, for other regions), it concretely shows the "regional division" in which the same TRICARE program has different contractors by region.

3Military health care as a pillar of defense spending

Military health care is a major pillar of defense spending, and the fact that its operation is outsourced as large contracts to private insurers makes it a noteworthy area where defense and health care intersect.

4Three regions in the T3 generation

Within the same TRICARE, the contractor differs by region. From the records this site holds as of 2026-09-01, the three T3-generation regions line up as follows.

Together the three come to about $53 billion. Splitting contractors by region avoids concentration in one firm while having each build the medical network in its own area. The differences in amount reflect enrolment and cost levels, so a review of the boundaries translates directly into a change in each firm's scale of business.