Our Team

Dr. Rebecca Jahed, Clinical Audiologist


Dr. Rebecca Jahed has lived many places during her childhood as part of a military family, but eventually settled in the Maryland/DC area in 1983. She attended Penn State University and completed her undergraduate degree in 1987. She worked in the Montgomery County School system with hearing impaired and special needs children before continuing her education. Rebecca then attended the University of Maryland where she received her Master of Arts degree in Hearing and Speech Science in 1992. Most recently, she continued her education and received an AuD (Doctorate of Audiology) from Arizona School of Health Sciences in 2009. She is a fellow with the American Academy of Audiology and with the Academy of Doctors of Audiology.

Dr. Jahed has worked in several different areas of audiology including private practice, as an educator for a large hearing instrument manufacturer, and as a clinical audiologist working with several Ear, Nose, and Throat medical practices in the Southern Maryland area. This diversity has enhanced her knowledge and skills in many different areas of the audiology profession.

Rebecca has been happily married for 26 years and has two daughters in college and one son in high school.

Since she has lived and worked for many years in her hometown of Calvert County, she is excited about continuing services in a private practice setting in Southern Maryland. She has made personal and excellent customer service her mission and will help clients, friends, and family achieve a better quality of life with enhanced hearing ability.

Dr. Gina Diaz, Clinical Audiologist

Dr. Gina Diaz recently joined Freedom Hearing Center, and has gained extensive clinical experience at a wide variety of clinical settings including Boys Town National Research Hospital (Omaha, NE) and Ear Nose and Throat Associates (Baltimore, MD). Audiologic service provision to the general and special needs populations (adult and pediatric) included comprehensive diagnostic evaluations, electrophysiologic assessments, hearing aid fittings and management, cochlear implant mapping, newborn hearing screenings, and vestibular diagnostic testing. Dr. Diaz has also been an active participant of the Cleft Lip and Palate Team at the Greater Baltimore Medical Center where she provided full audiologic assessments for both children and adults with congenital malformations/multiple disabilities.

Dr. Diaz completed her Bachelor of Science degree in Speech, Language and Hearing Science from West Virginia University in 2009. She continued her studies in audiology at the University of Nebraska-Lincoln and received her Master of Science degree in 2012 and her Doctor of Audiology degree in 2013.
Dr. Diaz has published and conducted research studies in the cochlear implant lab at Boys Town National Research Hospital, the effect of technology and testing environment on speech perception using telehealth with cochlear implant recipients. In addition, she completed a retrospective analysis on speech-perception outcomes for children and adolescents receiving sequential bilateral cochlear implants with at least 4 years between surgeries. Dr. Diaz is a licensed audiologist in the state of Maryland and is a Certified Occupational Hearing Conservationist (COHC).

Dr. Diaz’s goal is to provide expert care and compassion to all patients and their families with the use of state-of-the-art equipment and continuing education. Dr. Diaz is passionate about audiology and the difference better hearing can make in the quality of a person’s life. She strives to provide in-depth evaluations to diagnose and treat hearing loss and balance disorders.

Dr. Diaz has a diverse background and provides expertise in the areas of pediatric and adult behavioral and electro-acoustic diagnostic testing including Auditory Brainstem Response (ABR) testing, Otoacoustic Emissions (OAE), and Videonystagmography (VNG). She is dedicated to helping families make informed decisions and advocate for their children regarding their hearing health. In addition, she incorporates early detection and management, preservation of hearing, and education for all patients and family members. Lastly, Dr. Diaz is committed to providing the most appropriate hearing aid technology to help people communicate effectively in their everyday activities and listening situations. Dr. Diaz grew up in Long Island, NY and currently resides in California, MD with her husband and two children. She enjoys traveling, community service, and spending quality time with friends and family.

Dr. Lisa Behringer, Clinical Audiologist

Dr. Behringer works at the Greenbelt Freedom Hearing Center office, which is located within the office of Dr. Khosrow Seyed Makki, Otolaryngologist. Lisa grew up Lanham, Maryland, and after attending Eleanor Roosevelt High School, she went to the University of Maryland where she received both her Bachelor’s and a Master of Arts degree in Hearing and Speech Science. After working several years in the profession of audiology, she returned to school to continue her education so she would be even better equipped to serve her patients. She obtained her AuD (Doctorate of Audiology) from Salus University in 2009 and is a Fellow of the American Academy of Audiology.

Dr. Behringer has experience in many different areas of audiology, having worked with various hospitals, private audiology and Ears-Nose-Throat physician practices over the course of her career. She became affiliated with Dr. Makki in 2007. She is proud that the Greenbelt office is able to offer high-caliber Otolaryngology and Audiology services. The fitting of hearing aids is her particular specialty, and she enjoys the challenge of keeping up with the latest in hearing aid technology.

Lisa has lived in Bowie, Maryland, for over 20 years with her husband and two children. She is an active member of her local church, participates weekly in a live trivia team, and is a fan of the Washington Capitals hockey team. She greatly enjoys working with her patients and loves to help people hear and communicate better.

Dr. Becky Guy, Au.D., CCC-A, FAAA

June of 2018 marked Dr. Guy’s twenty-fifth year of practicing audiology. She obtained her Doctorate in Audiology degree at the Arizona School of Health and her Masters of Arts degree at the University of Maryland at College Park. Dr. Guy has worked closely with ENT physicians in Otolaryngology offices and along with fellow Audiologist in private practice.

Dr. Guy prides herself in offering the best patient care to all of her patients. Her success at this can be seen by the many physician and patient referrals she receives. Dr. Guy is a Southern Maryland native. She and her husband enjoy raising their three daughters in their St. Mary’s County home. She is a huge Washington Redskin fan and enjoys occasional wine tastings at local vineyards.

Kelly Hopper, Billing Manager

Kelly is excited to be part of Freedom Hearing Center. Prior to joining the practice, she worked as the practice manager of a private audiology clinic in Birmingham serving patients in three locations where she performed all aspects of practice management including patient care.

She has more than 20 years of experience in the medical field. She attended Jacksonville State University and the University of Alabama in Birmingham. After college, she began working with an Ear, Nose and Throat medical practice where she worked closely with the physician and audiologist.

Kelly has been married for 27 years and has two sons. She enjoys spending time with family and traveling.


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