Dr. Chang is the Chief Medical Officer of APAC. He specializes in pain management and interventional spine procedures. He received his Medical Degree and completed his Anesthesiology Residency and Pain Fellowship training at Rush University Medical Center. He is a member of the American Academy of Pain Management (AAPM), the American Pain Society (APS), and the International Spine Intervention Society. Dr. Chang has been an established pain management physician in Chicago for over 25 years. He is Board Certified in Anesthesiology and Pain Management.