For fellowship-trained Mohs micrographic surgery in La Mesa, Christopher Crosby, MD, PhD at Grossmont Dermatology is one of a select number of ACGME-fellowship-trained Mohs surgeons practicing in the San Diego region. He completed his MD and PhD at the Medical University of South Carolina, served as Chief Resident during his dermatology residency at Emory University, and finished his Mohs fellowship at the University of California San Francisco in 2010—a training sequence that built the skin cancer excision and reconstruction expertise now anchored on Center Drive near Alvarado Eye La Mesa, whose ophthalmologic specialists coordinate on periorbital tumor cases requiring eyelid reconstruction. Board certified by the American Board of Dermatology and a Fellow of both the American Academy of Dermatology and the American Society for Dermatologic Surgery, his practice treats basal cell carcinoma, squamous cell carcinoma, melanoma, acne, and psoriasis. Affiliated with Sharp Grossmont Hospital, Jennifer Moreno VA Medical Center, and UC San Diego Medical Center – Hillcrest, the practice maintains a three-hospital referral network, with dermatologic prescriptions for topical and systemic agents filled through independent providers including Village Rose Pharmacy in La Mesa Village. Highest-complexity cases involve multi-stage Mohs excision with same-day flap or graft reconstruction for large-diameter facial skin cancers requiring frozen-section margin control and layered dermal closure.