About Us
Karen Glickman, M.A., CCC-A
Karen Glickman, M.A., CCC-A is a seasoned audiologist with over 30 years of experience including more than two decades at Preferred Hearing Center, where she has proudly served as owner since 2020. She earned her Bachelor’s degree in Hearing and Speech Sciences from the University of Maryland and her Master’s degree in Audiology from George Washington University. Karen completed her clinical fellowship at Johns Hopkins Hospital and began her career at MedStar Washington Hospital Center.
Karen specializes in diagnostic audiology and stays at the forefront of hearing aid technology to provide patients with the most advanced and effective hearing solutions available. Known for her compassionate, patient-centered approach, she is committed to taking the time to truly understand each patient’s unique hearing needs and helping them reconnect with the people and moments that matter most.
She is a member of the American Academy of Audiology and a certified member of the American Speech-Language-Hearing Association. Deeply committed to the local community, Karen is an active member of the Olney Lions Club and serves on the board of the Olney Chamber of Commerce.
Outside of the office, Karen enjoys traveling, biking, and spending time with her husband, two adult children, and beloved dog, Charlee.
Kaitlyn Sheapp
Dr. Kaitlyn Sheapp, is a dedicated audiologist with a well-rounded educational and clinical background. She earned her Bachelor’s degree in Hearing and Speech Sciences from the University of Maryland and completed her Doctorate in Audiology at Gallaudet University. Throughout her academic journey, she gained hands-on experience through clinical rotations at esteemed institutions, including Johns Hopkins Hospital, and worked in several private practices. Her research was published in a respected audiology journal, showcasing her commitment to advancing the field.
Dr. Sheapp spent her early career working in an ENT practice, providing high-quality care in diagnostic audiology, amplification, vestibular diagnostics, and tinnitus treatment. Today, she continues to serve the community through the Newborn Hearing Screening program at Shady Grove Hospital and maintains a specialized role at the American Institute of Balance, where she focuses on diagnosing complex vestibular and balance disorders. Her commitment to the field extends into the classroom as an adjunct professor at Gallaudet University, where she has taught courses on electrophysiology and amplification, sharing her knowledge and expertise with the next generation of audiologists. By combining her hospital-based experience, her specialized balance training, and her passion for teaching, Dr. Sheapp ensures that every patient receives holistic, expert care tailored to their unique needs.
Returning to Olney, the community where she grew up, to join Preferred Hearing Center is a meaningful milestone in Dr. Sheapp’s career. She is honored to care for the neighbors and families that make this area home. Outside of her professional life, Kaitlyn maintains a well-balanced and fulfilling lifestyle—whether she is experimenting with new recipes, hiking local trails, or enjoying a game night with friends. Most of all, she loves spending time with her puppy, Charlie Waffles.
Allyson Shumaker
Allyson has worked alongside Karen for over 20 years, including the first 15 years together in an ENT practice. As the Office Manager and Insurance Specialist at Preferred Hearing Center, Allyson is the go-to resource for insurance, scheduling, and billing questions, helping ensure the office runs smoothly each day.
At Preferred Hearing Center, we are proud to be in-network with all major health insurance plans, and Allyson plays an important role in making the process as seamless as possible for our patients. Understanding how overwhelming insurance and healthcare benefits can feel, she is dedicated to helping patients navigate coverage with clarity and confidence. From verifying benefits to answering billing questions, Allyson strives to provide accurate information and personalized support every step of the way.
Known for her warm and welcoming personality, Allyson enjoys getting to know each patient and works hard to make every visit a positive and pleasant experience.
Outside of the office, Allyson stays busy raising her three amazing children. When she is not cheering them on at baseball and softball fields, she enjoys spending time with family and friends, crafting, and volunteering in the community.