After graduating from Duke University, Dr. Crosby went on to earn both his M.D. and a Ph.D. from the Medical University of South Carolina in Charleston. S.C. He then completed his internship at Harbor-UCLA Medical Center followed by his residency in Dermatology at Emory University, where he served as Chief Resident.
Following his residency, Dr. Crosby sought further advanced training by completing an ACGME accredited Fellowship in Mohs Micrographic Surgery and Procedural Dermatology at the University of California, San Francisco. He is one of only few Fellowship-trained Mohs surgeons in the area. His specialties include Mohs surgery and reconstructive dermatologic surgery for skin cancers.