M. Duncan MacAllister, Ph.D. has over 40 year of experience. His doctorate in Psycho-acoustics, the psychological study of sound, has allowed him the privilege of helping his many patients attain the best hearing quality available today. He has obtained a remarkable 14 patents in hearing aid technology. Dr. MacAllister and the other staff here at HCRI Hearing Center invite you to experience the true solutions to hearing loss we can provide for you.   Our patients enjoy the best hearing care available because they know that we will not "give up" in an effort to enhance their hearing. The Hearing Center provides advanced facilities and equipment, along with a full staff of qualified professionals. We even have the engineering capability to create customized and unique hearing devices to assist every need. Our clients enjoy the fact that there is no pressure to purchase anything. We take a warm, person focused approach to the process of assessing hearing loss and to the process of fitting hearing instruments. We work carefully with each person to assure that everything is being done to provide the best possible hearing experience. We also want you to understand that there is no financial risk to you when you work with us. The HCRI Hearing Center is located in Hollins, Virginia, just to the north of Roanoke. Access is easy since our facility is located just a short distance from I-81 or U.S. Route 11. Click Here for Directions >> The new HCRI building was designed and constructed specifically to facilitate our communications assistance programs. Design features embodied within the structure foster meeting individual needs and positive interactions for our patients