| Dr. Hsi Yen is a California state licensed medical doctor, specializing in Dermatology. Graduated Magna Cum Laude from Taiwan, completed residency training in Linkou Chang Gung Memorial Hospital, and completed the Dermatology specialist training at Medical College of Wisconsin. Dr. Yen currently is working at USC Keck Medicine of USC, located in 1975 Zonal Ave. Los Angeles CA 90033 | |||