He was an assistant professor of clinical dermatology, director of the dermatology resi­dency training program, director of the Pigmented Lesion Clinic, and direc­tor of Contact and Occupational Dermatitis at University of Southern California before joining the Stanford faculty in 2010. Dr. Peng received his medical degree from University of California, San Diego, where he completed his residency in dermatology, and he earned his master’s in public health from UCLA. Dr. Peng is Board Certified by the American Board of Dermatology.