A Fellow of the American Academy of Audiology and the American Speech-Language-Hearing Association he has served on both the Ohio Academy of Audiology and the American Academy of Audiology Boards of Directors and as Chair of the American Board of Audiology. Dr. Clark is a recipient of the Honors of the Ohio Speech-Language-Hearing Association and the Distinguished Alumni Award from the University of Cincinnati, Department of Communication Sciences and Disorders and the author of a number of professional and academic texts on hearing loss and hearing rehabilitation.