Director Chao-Hsiang Chang completed his Urology Specialist training at Taichung Veterans General Hospital and was an attending physician there. He went to Ann Arbor Medical Center, University of Michigan for advanced training. In 1995, he took the position of Director of Department of Urology, Dali Rengai Hospital, and has been working at the Hospital since 2001. He specializes in complication in urinating, and minimally invasive urological procedures (laparoscope and Da Vinci Procedure System), including urinary incontinence and Neurogenic Bladder, bladder prolapse, swelling of prostatomegaly, renal cancer, epidermal cancer, bladder cancer, prostate cancer, director and vice president of Taiwan Urological Association (Central region)