Dr. Gary John Chang, MD, is an esteemed anesthesiologist with over 42 years of experience in the medical field and over 15 years specializing in non-operative interventional diagnostic and therapeutic pain procedures, particularly for back and neck pain. He is board-certified by the American Board of Pain Medicine and the American Board of Anesthesiology, with a proven track record of performing more than 50,000 fluoroscopic guided interventional spinal procedures. Dr....