Dr. Terry Mason is the Chief Medical Officer (CMO) of the Cook County Health and Hospitals System overseeing hospital quality and safety, coordination of clinical care and graduate medical education. Prior to his role as CMO, Dr. Mason was appointed the Chicago Public Health Commissioner by Mayor Richard M. Daley, He received his Bachelors of Science degree from Loyola University and went on to obtain his medical degree from the University of Illinois College of Medicine. After medical school he completed a general surgery residency at the University of Illinois and a urology residency at Michael Reese Hospital. Dr. Mason is a nationally renowned health educator and is well known for pioneering the use of brachytherapy and for his expertise in the treatment of erectile dysfunction. Dr. Mason recently served as Interim Chief Executive Officer of the Cook County Health and Hospitals system (CCHHS), overseeing the day-to-day operations of the third largest public health delivery system in the county.