David Corbin, MD practices internal medicine at San Ysidro Health's Santee Family Medicine clinic, a federally qualified health center at 120 Town Center Parkway in Santee that accepts Medicare, Medicaid, and sliding-scale patients. After-hours acute presentations that exceed the clinic's scope transfer to East County emergency and walk-in facilities including AFC Urgent Care Santee on Mission Gorge Road for stabilization and triage. Dr. Corbin graduated with honors from the University of Debrecen Medical School and completed internal medicine residency at Dartmouth-Hitchcock Medical Center, one of New England's academic teaching hospitals. San Ysidro Health's integrated model pairs medical visits with behavioral health, dental, and social-support services — including food-security and housing-assistance navigation — under a single organizational umbrella. Oral health screenings during wellness exams identify periodontal and caries risk early, generating referrals to Mast Boulevard dental providers such as East County Family Dentistry for restorative follow-up. Comprehensive metabolic panels track estimated glomerular filtration rate and urine albumin-to-creatinine ratios at six-month intervals for diabetic nephropathy staging in the clinic's chronic kidney disease registry.