His clinical expertise is in anti-infective chemotherapy and pathology. Dr. Riedel serves as the director of Clinical Pathology Laboratories at the Johns Hopkins Bayview Medical Center.He earned his M.D. and Ph.D. from Johann Wolfgang Goethe Universität, Frankfurt am Main, Germany. He performed residencies in anatomic and clinical pathology from Baylor University Medical Center and orthopaedic surgery from Kantonales Spital Alstatetten. Dr. Riedel also completed a fellowship in medical microbiology from the University of Iowa Hospital.His research focuses on epidemiology of emerging bacterial resistance, mechanisms and laboratory detection of antimicrobial resistance, with a particular interest in gram-negative organisms.Dr. Riedel is a member of College of American Pathologists, American Society for Microbiology and the Association for Clinical Pathology.