Hearing Assessment Center, LLC’s Bel Air, MD Office

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Call or text us now at 410-709-0818 or send in the form and get your questions answered.

2103 Laurel Bush Rd, Ste A
Bel Air, MD 21015

Call or text: 410-709-0818
Fax: 410-583-2117

Monday and Wednesday: 8:30am-4:30pm

Bel Air, MD Google Business Profile

Schedule an appointment with our qualified Bel Air, MD audiologists for your hearing loss, hearing aids, or a hearing test.







    Discover what we’ve accomplished for so many others in Bel Air, MD who were experiencing hearing loss. We can help you, too.

    Hearing loss can feel isolating. But it doesn’t have to be that way. At our Bel Air, MD, location we’re more than just hearing aids. We can help you identify the cause of your hearing loss through hearing tests and a hearing health evaluation to determine what treatment options will work best for you.

    Meet Our Team

    Donald A. Guillen, Au.D., Doctor of Audiology

    Donald A. Guillen, Au.D.

    Doctor of Audiology

    Dr. Donald A. Guillen currently serves as Director of Clinical Services. He received his clinical doctorate from Towson University and completed his clinical fellowship at the Hearing Assessment Center and has remained with the practice since 2015.

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    During his doctoral studies, he conducted extensive research where his primary focus was on investigating the impact of degraded listening conditions, such as background noise and reverberation, on cochlear filtering and auditory brainstem encoding in both normal and hearing-impaired individuals. His research inquiries were centered on uncovering the reasons behind the challenges faced by hearing-impaired individuals in understanding speech within noisy environments, a topic of paramount importance in his clinical practice

    Dr. Guillen’s profound understanding of this research has proven invaluable in his clinical practice, where he provides comprehensive treatment for individuals with hearing impairments. In addition to his clinical work, Dr. Guillen is deeply committed to raising awareness about the consequences of untreated hearing loss. He serves as a Community Ambassador, actively engaging with the community by giving talks and conducting hearing screenings at senior centers, local military retiree centers, hunting clubs, and various other local organizations. His involvement extends to assisting the international community through his contributions to the St. Clare Medical Outreach program, which aims to reduce healthcare disparities between the uninsured and the general population. Dr. Guillen has displayed a strong dedication to serving local veterans and has taken on a leadership role in this regard.

    Furthermore, Dr. Guillen has played a pivotal role in shaping the future of audiology by taking on the responsibility of training students from many local and national universities. He actively guides and supports these students in their pursuit of audiological knowledge and expertise, sharing his wealth of experience and fostering their growth in the field.

    In his spare time, Dr. Guillen enjoys playing the saxophone, traveling, and exploring new cultures and foods with his wife and two daughters.

    Expertise and Experiences

    • Dr. Guillen possesses specialized expertise in cerumen (ear wax) removal, employing only non-abrasive methods to ensure a comfortable and pain-free experience for his patients.
    • He specializes in industrial audiology and worker’s compensation claims, having worked closely with numerous firefighters and police officers in the area, delivering rehabilitative treatment to support their auditory health. He along with his team have served well over 500 local active and retired first responders.
    • Dr. Guillen’s professional interests and areas of expertise encompass tinnitus evaluation, tinnitus retraining therapy, the diagnosis and treatment of hearing loss, cognitive/neural hearing deficits, healthy aging, forensic audiology, and patient education. His multifaceted knowledge allows him to provide comprehensive care tailored to each patient’s unique needs.

    What Our Patients Say