Our Hearing Professionals
Keith P. Walsh, Au.D.
Audiologist / Owner
Keith Walsh, Au.D. was drawn to the profession of audiology because he has found working and helping people overcome handicaps and improving their quality of life extremely rewarding. He has always had an acute interest in sound, music, and movement, which over time led to his desire to further his education by studying for and obtaining his doctor of audiology, Au.D., the highest professional degree for an audiologist, and becoming an official affiliate of The American Institute of Balance. Dr. Walsh founded Adirondack Audiology Associates in 1987 after working for three years at Sunmount Developmental Center in Tupper Lake, NY as a staff audiologist, followed by four years developing and launching the Department of Audiology at Champlain Valley Physicians Hospital Medical Center in Plattsburgh, NY. Dr. Walsh is very active in his industry's professional organizations as a Fellow of both the Academy of Doctors of Audiology and the American Academy of Audiology. He is also involved with the Audiology Foundation of America and is committed to staying on top of best practices and new technology as an audiologist Board Certified by the American Board of Audiology. In his free time, Dr. Walsh enjoys outdoor sports including running, skiing and biking. He's participated in many forms of racing, such as the Adirondack Canoe Classic 90 Miler, and has directed many local events in the upstate New York area, including the Tupper Lake Tinman Triathlon. He has also run the New York and Boston marathons and enjoys biking to work. Dr. Walsh lives in Shelburne with his wife, Molly, and their two children.
Erin A. Laundrie, Au.D., F-AAA
Erin Laundrie, Au.D., FAAA, received her Doctorate in Audiology from the University at Buffalo, where she conducted research on auditory cortex enhancement and tinnitus. Dr. Laundrie’s clinical interests include tinnitus, balance/dizziness testing, electrophysiology, and improving communication abilities through the use of amplification. She was excited to return to her hometown in 2011 and has proudly served the North Country’s hearing, tinnitus, and balance needs with Adirondack Audiology since her return in 2011. Although Dr. Laundrie enjoys all aspects of audiology, she especially loves improving a patient’s quality of life through the use of hearing aids. In her free time, Dr. Laundrie enjoys spending time with her family and friends, reading, running, and playing softball. She is an avid sports fan.
Lori E. Mathieu, Au.D.
Dr. Lori Mathieu has been providing expert hearing care to Plattsburgh and the surrounding areas for the past 27 years. Prior to her work at Adirondack Audiology Associates, she provided audiological care at Sunnybrook Medical Center, the teaching hospital for the University of Toronto where she enjoyed providing a variety of testing protocols including intraoperative neurophysiologic monitoring, tinnitus and communication strategy workshops as well as hearing assessments for a busy ENT practice. Dr. Mathieu graduated from Plattsburgh State University in 1982 with a BA in Speech and Hearing Science. In 1984 she graduated from Syracuse University with a MS in Audiology, and shortly after graduation obtained her certificate of clinical competence in audiology. In 2000 Dr. Mathieu decided to pursue her Doctorate in Audiology and graduated in 2002 from the Arizona School of Health Sciences, AT Still University. Dr. Mathieu is committed to providing compassionate quality hearing care to her patients by improving their quality of life using only the most advanced and current testing, verification and counseling techniques as well as superior hearing aid technologies. Dr. Mathieu is a member of the American Academy of Audiology, Academy of Doctors of Audiology, the New York State Speech Language and Hearing Association and The Tinnitus Practitioners Association. She holds a current audiology license and hearing aid dispensing license in the State of New York. Dr. Mathieu is also proud to serve her community and has been an active member of the Plattsburgh Rotary Club for over 20 years. She enjoys spending time with her family and enjoys gardening, walking, biking, and a variety of water sports.
Hugo Guerrero, Au.D.
Dr. Guerrero earned his doctorate in audiology from Northern Illinois University. While earning his doctorate, he conducted research on the effect of concussions in athletes. Dr. Guerrero completed his yearlong externship at the University of Mississippi Medical Center, where he gained an abundance of experience working with Cochlear Implants, Interoperative Monitoring, Adult and Pediatric Diagnostics, and Vestibular testing. Dr. Guerrero enjoys all aspects of audiology, but has a special interest in fitting adults with Hearing Aids. Dr. Guerrero is a member of the American Academy of Audiology, American Doctors of Audiology and is a Certified Occupational Hearing Conservationist.
In his free time, Dr. Guerrero enjoys reading research articles, exploring the North Country area, and spending time with his wife, Cecelia, and two dogs, Cannoli and Mona.
Claire Pietrzak, Au.D.
Dr. Claire Pietrzak was born and raised in Syracuse, NY. She received her Doctorate in Audiology from Syracuse University in 2015 and holds a Bachelor’s degree in Communication Sciences and Disorders from the University of New Hampshire. Claire completed her yearlong externship at Charleston ENT in Charleston, SC, gaining experience with pediatric and adult diagnostics, and vestibular testing. Claire has worked in the greater Syracuse area and has expertise with tinnitus assessment and tinnitus sound therapy. In her free time, Claire can be found watching SU Basketball, enjoying the outdoors, and spending time with her family, friends and dog, Carl!