Katherine H. Turpen, M.A., CCC-A Katherine H. Turpen holds a Masters degree in Audiology from the University of Memphis. She is a licensed audiologist with more than 15 years experience in all facets of clinical audiology. Ms. Turpen is a fellow of the American Academy of Audiology, and holds the Certificate of Clinical Competence (CCC-A) from the American Speech, Language and Hearing Association. Ms. Turpen has participated in numerous continuing education programs, and served as an advisor to several hearing aid laboratories in the evaluation of digital and digitally-programmable hearing aid technology.