Our Professional Staff

Katherine Stevens has been an audiologist for over 28 years. She earned her Bachelor’s degree from the University of Michigan, followed by a Master’s degree and Ph.D. from Northwestern University. She has practiced in hospitals, university clinics and private physicians’ offices.

Dr. Keesling received his Bachelor’s degree in Communication Sciences and Disorders from the University of North Texas and completed his doctorate in Audiology at Northwestern University. His clinical placements included hospitals, private practices, research facilities, university clinics and the Great Lakes Naval Recruitment Center. He has experience with comprehensive hearing evaluations, hearing aid selections and fittings, hearing conservation, tinnitus evaluations and counseling.

Michelle Mattingly has been practicing Audiology for over 22 years. She received her bachelor’s degree (B.S.) from Northern Illinois University, Master’s degree (M.S.) from Illinois State University, and her Doctorate (Au.D.) from AT Still University in Arizona.

Laura Knoll has been practicing Audiology for over 10 years. She received her Bachelor’s degree from Miami University in Ohio. She continued on to earn her Master’s degree and Clinical Doctorate (Au.D.) from Rush University Medical Center in Chicago. She holds an Illinois Audiology license, is a fellow of the American Academy of Audiology (AAA) and is certified by the American Speech-Language and Hearing Association (ASHA).