She is also the Director of Global Surgery for the Department of Surgery. Her scope of practice includes bariatrics, hernia, and robotics. Dr. Zhang is committed to reducing health disparities and has worked at various medical institutions abroad. She spent one year in South Sudan initiating a community health program that has now treated over 50,000 children with communicable diseases. In addition, she has been involved in surgical mission trips in the Dominican Republic, Haiti, Honduras, Ghana, and China.