Board-certified dermatologist Brian O'Neal, DO, treats patients in Santee through Sharp Rees-Stealy's Cuyamaca Street medical campus, bringing an osteopathic medicine background from AT Still University's Kirksville College to his skin-disease practice. His clinical scope includes acne management, psoriasis treatment protocols, and melanocytic lesion surveillance, with post-procedure prescriptions routed through the in-building Sharp Rees-Stealy Santee Pharmacy on the ground floor. Additional training in public health and general preventive medicine alongside family medicine broadens his diagnostic lens beyond isolated dermatologic presentations to systemic correlates. Biopsy specimens collected during shave and punch excisions are processed at Sharp Rees-Stealy Santee Laboratory on the first floor for histopathological evaluation and margin assessment. His highest-acuity cases involve staged excision of nonmelanoma skin cancers with pathology-confirmed peripheral and deep margin clearance before reconstructive closure.