Robert A. Sartor, MD has delivered board-certified internal medicine in Chula Vista since 1998, practicing through Sharp Rees-Stealy Otay Ranch at 1400 East Palomar Street after earning his medical degree from Saint Louis University School of Medicine in 1995 and completing residency at UC Irvine Medical Center. His internal medicine caseload generates frequent laboratory requisitions for comprehensive metabolic panels, lipid profiles, and coagulation studies processed at Sharp Rees-Stealy Otay Ranch Laboratory, where results integrate directly into the Sharp electronic health record for same-day physician review. Trilingual consultations in English, Spanish, and Tagalog serve the Eastlake community's diverse population, and dual hospital affiliations at Sharp Chula Vista Medical Center and Sharp Memorial Hospital enable inpatient placement across two acute-care facilities. His clinical expertise in diabetes, hypertension, and aneurysm management positions the Floor 3 practice as a high-acuity adult primary care resource within the expanded Sharp Rees-Stealy Otay Ranch campus near Otay Ranch Town Center. Integrative pain management for patients with chronic musculoskeletal conditions coordinates with Perfect Balance Acupuncture in the Eastlake area for acupuncture-based protocols that complement conventional pharmacologic approaches. Highest-complexity case management includes multi-organ chronic disease coordination for patients carrying concurrent congestive heart failure, chronic kidney disease, and insulin-dependent diabetes diagnoses — requiring quarterly renal function surveillance, diuretic titration, and cardiorenal syndrome monitoring.