His research interests include the discovery of pathogens as potential causes of vasculitis and the study of the anemia of inflammation. He participates in several multi-center trials analyzing the effects of experimental medications in the treatment of vasculitis. Dr. Koening joined the rheumatology faculty in 2007 after completing an NIH sponsored vasculitis fellowship at the Cleveland Clinic Center for Vasculitis Care and Research. He is a steering committee member for the Vasculitis Clinical Research Consortium. Dr. Koening is partially supported with funds from the Department of Veterans Administration and is a fellow of the American College of Rheumatology.