Leidos QTC Health Services operates a federal disability examination center in Chula Vista at 450 4th Avenue, functioning as the nation's largest provider of Veterans Benefits Administration compensation and pension evaluations. The Chula Vista facility processes C&P examinations for veterans transitioning between active-duty care and VA benefits, complementing the primary care continuity provided at the Chula Vista VA Clinic for ongoing service-connected condition management. Founded in 1981 as QTC Medical Services and now a wholly owned subsidiary of Leidos (NYSE: LDOS), the organization delivered more than one million examination cases nationwide in 2024 and currently averages 63,000 veteran evaluations per month across all regions. Exam protocols follow VBA diagnostic guidelines for musculoskeletal, respiratory, cardiovascular, and neurological assessments, with findings transmitted directly to VBA IT systems for claims adjudication under performance-based quality metrics. Mental health compensation evaluations — including PTSD, anxiety, and traumatic brain injury assessments — form a significant portion of the caseload, paralleling the psychiatric diagnostic services available through LifeStance Therapists & Psychiatrists Chula Vista for veterans requiring ongoing treatment beyond the claims process. Highest-tier evaluations involve multi-system disability ratings requiring simultaneous audiometric testing, pulmonary function spirometry, and electrodiagnostic nerve conduction studies coordinated within a single appointment sequence per VBA scheduling protocols.