Our History

Allergy Associates of Western Michigan has been serving the community for almost 40 years, during which time we have been dedicated to providing patients relief from a variety of allergic and asthma-related conditions. The office was established in 1982 by Dr. Richard Townley, who practiced solo until he was joined by Dr. Thomas Miller in 1992. In 2008, the practice was expanded to include a second location to better serve our patients. Dr. Townley retired from practice in 2019, but has left us a legacy of individualized, quality care, which we continue to provide our patients and their families.

Our Providers

Thomas Miller, M.D.
Dr. Miller completed his residency in internal medicine at the University of Michigan. His fellowship in allergy and clinical immunology was completed at Northwestern University, including time at Children’s Memorial Hospital in Chicago. He holds an appointment through Michigan State University College of Human Medicine, and a master's degree in Epidemiology. He has been involved in asthma research in high-risk children and adults, and has presented his research locally as well as internationally. Dr. Miller has been asked to lecture nationally, and has also written articles on a variety of allergy related topics, including high-risk asthma and eosinophilic gastrointestinal disorders. Dr. Miller has taught Applications of Epidemiology and Biostatistics to second-year medical students at the MSU medical school in Grand Rapids. He has been named "Tops in GR" in his field, a distinction featured in the Grand Rapids Press. In his spare time, Dr. Miller is involved in endurance sports, having competed in several triathlons and marathons, including the Boston Marathon.

Erica Palmisano, M.D.
Erica Palmisano joined the practice in 2020. She is a native of Michigan and completed her medical school training in Detroit at Wayne State University. From there she moved to Chicago for her pediatric residency at Northwestern University and her allergy and immunology fellowship at Rush University. After fellowship Erica worked at an allergy practice in Chicago for several years. She has a special interest in pediatric food allergy, asthma and eczema management. While she and her husband love the Windy City they wanted to move back home with their sons to be closer to family. When she isn’t at work she can be found enjoying the Michigan
outdoors, baking in the kitchen or chasing two toddlers around.

Erin J. Gibson, P.A.-C
Erin Gibson, who joined the practice in 2008, is a graduate of Grand Valley State University with a Master’s degree in Physician Assistant Studies. She was born and raised on Michigan's east side, but moved west to attend GVSU. She has nearly 20 years of experience in allergies and asthma, and is a member of the American Academy of Physician Assistants. Erin and her husband have four young children who keep them very busy with school and extracurricular activities. As a family they enjoy spending time outdoors, especially attending sporting events, going on family bike rides, fishing and visiting the many beaches of Lake Michigan.

Our clinical staff is composed of Registered Nurses, Licensed Practical Nurses and Medical Assistants. All are trained in the duties specific to the field of allergy, and are cross-trained for the various patient-care responsibilities within the office.

Our clerical staff members maintain the reception area, as well as scheduling appointments and directing calls to other office staff, including our triage nurse, extract nurse, and billing and transcription specialists.

Contact Us

Our Locations

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Office Hours



8:30 am - 6:00 pm

Tuesday - Thursday:

8:30 am - 5:00 pm

Friday - Sunday:


Grand Rapids

Monday, Thursday - Sunday:



8:30 am - 5:00 pm


9:00 am - 5:00 pm