A Military Health System For The Twenty-First Century.

The Military Health System is one of the largest integrated health care systems in the United States. It is composed of a "direct care" system of military treatment facilities managed in a federated manner by the Army, Navy, Air Force, and Defense Health Agency and a "purchased care" component that consists of a network of health care providers managed through TRICARE. The system is undergoing significant reform and transformation. In 2017 Congress directed the Department of Defense (DoD) to consolidate all DoD military treatment facilities of the Army, Navy, and Air Force under the Defense Health Agency, while at the same time DoD civilian leaders put additional pressure on the system to accelerate reform efforts across the enterprise. Similar to other health systems, the Military Health System is under pressure to achieve greater efficiencies and reduce costs. This article portrays the drivers for consolidation of the three medical departments-those of the Army, Navy, and Air Force-under one agency and reflects on the impacts of this transformation in light of the DoD's unique mission.