Welcome to Our Practice

Welcome to OIT of Western Michigan, Your Food Allergist Specialist in Grandville and Grand Rapids Michigan

Allergy Associates of Western Michigan is excited to announce our new division, OIT of Western Michigan. We take the privilege of caring for patients with food allergies seriously, and are proud to offer a treatment that is both safe and effective.

Several years ago, Dr. Miller began considering the possibility of managing food allergies with more than simply strict avoidance of problem foods. His desire to improve his food allergic patients’ quality of life led him to study the process of oral immunotherapy. He spent many years reading literature and studying protocols before he developed the process we now use in our office. Our current protocol is largely based on a system that has been in use for over 10 years, assisting more than 15,000 patients. Since we began offering oral immunotherapy in 2019 we have successfully desensitized patients to milk, egg, soy, peanut, and tree nuts, and we continue adding more food allergens to this list.

Our offices are featured on the Food Allergy Support Team website, which is dedicated to educating and supporting food allergic patients, families and caregivers.  This site contains blogs on many food allergy topics, as well as other educational links, and is a valuable resource for anyone desiring to understand more about food allergies, their management and treatment.  

We hope to provide you or your child the chance to safely enjoy foods without fearing the risk of reaction. If you desire freedom from the restrictions and anxiety food allergies can cause, OIT may be right for you. Our office is happy to assist you with answering questions or scheduling an appointment today.

Meet 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.

  • 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.

  • 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.

Contact Us

Our Location

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Hours of Operation

Our Regular Schedule



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