The US Military Health System (MHS) has a dual mission of maintaining a ready medical force to support active duty service members around the world and delivering insurance benefits to the service members, reservists, retirees, and family members-9.5 million individuals. The TRICARE insurance program delivers both direct care (delivered in military treatment facilities) and purchased care (delivered by contracted network providers in nonmilitary settings). The MHS is in the midst of a major transformation in efforts to improve quality, better integrate care, and reduce costs.