She was appointed in 2007 after having served more than five years as an assistant professor, Department of General Surgery, Washington University School of Medicine, St. Louis, Mo. Dr. Dietz is board-certified by the American Board of Surgery and National Board of Medical Examiners. Dr. Dietz received her medical degree from Jefferson Medical College of Thomas Jefferson University, Philadelphia, Penn. She completed a residency in general surgery at Cleveland Clinic and a fellowship in breast surgery at the Cleveland Clinic Breast Center.