Dr. Chang is a Clinical Professor in the Departments of Orthopaedics and Family & Community Medicine and Fellowship Program Director at University of California – San Francisco in San Francisco, California, as well as Co-Director of the Sports Concussion Program at UCSF Benioff Children's Hospital in Oakland, California. She is Board Certified in Family Medicine with a CAQ in Sports Medicine. Dr. Chang is a Past President of AMSSM, serves on the Board of Trustees for the American College of Sports Medicine as well as serves as the Chair of the Sports Medicine Advisory Committee for the California Interscholastic Federation. Dr. Chang has also served on the Sports Medicine Advisory Committee for the National Federation of State High School Associations. She has 28 years of experience caring for athletes of all ages and levels. She served as an Assistant Team Physician for Ohio State University, then was Head Team Physician at the University of California, Berkeley, for all 27 intercollegiate sports, including football, from 1995 until 2008. Dr. Chang has been a member of the sports medicine staff for five International Games, including serving as Chief Medical Officer for Team USA during the 2008 Beijing Paralympics and 2012 London Olympics. She currently volunteers as a Team Physician for both UC Berkeley and Berkeley High School, and continues to care for USA athletes.