Mark A. Willoughby, MD brings Chula Vista's F Street medical corridor a board-certified dermatology practice combining medical, cosmetic, and surgical skin care under a UCLA-affiliated Cosmetic and Skin Cancer Surgery fellowship accredited by the American Academy of Cosmetic Surgery. Primary care referral channels from physicians at Iris C. Ha, MD at Sharp Rees-Stealy Chula Vista feed suspicious lesions and chronic dermatologic conditions into the practice's diagnostic workflow near Third Avenue Village. His training traces from a UCLA undergraduate degree through an Ohio State University College of Medicine doctorate and a Cook County Hospital dermatology residency, where he served as chief resident. Periocular lesion cases requiring coordinated dermatologic and ophthalmic management are co-treated with retinal and anterior-segment specialists at American Eye Associates and California Retina Associates within the Chula Vista specialist network. The practice's highest-tier procedures include Mohs micrographic surgery for basal and squamous cell carcinoma, electronic surface brachytherapy for non-melanoma skin cancer, and fractional CO2 laser resurfacing for actinic damage.