Dr. Aach finished his residency training at Washington University in St. Louis and joined Lincoln Surgical Associates in 1991. He is certified by the American Board of Surgery and is a Fellow of the American College of Surgeons. Dr. Aach is on staff and cares for patients at both St. Elizabeth’s Hospital and Memorial Hospital in Belleville. He is currently chairman of the Department of Surgery at Memorial Hospital. In addition, Dr. Aach helps to educate physicians in training as clinical faculty with Saint Louis University. Dr. Aach is an active member of the Alpha Omega Alpha Honor Medical Society and has earned multiple academic and surgical awards during his career. He balances his surgical career with his role as husband and father and enjoys running and cycling.