He is the member of American Society of Plastic Surgeons (ASPS) and Fellow American College of Surgeons (FACS). Dr. Diehl completed his Medical Education from the Washington University and worked as a Resident of Plastic and General Surgery at the same University. Certified by the American Board of Plastic Surgery, he is a member of American Society of Plastic Surgeons (ASPS) and Fellow American College of Surgeons (FACS). Dr. Diehl has hospital affiliation at John T. Mather Memorial Hospital and St. Charles Hospital.