Established in 1970 by Dr. Robert M. Overholt, The Allergy, Asthma & Sinus Center is one of the country's largest allergy practices.

The Allergy, Asthma & Sinus Center is one of the country's largest and most established allergy practices. We have several offices located conveniently in Greater Knoxville, as well as in Athens, Cookeville, Crossville, Johnson City, Maryville, Morristown, Mt. Juliet, Oak Ridge, Old Hickory, Sevierville, and Corbin, KY The Allergy, Asthma & Sinus Center is staffed by an experienced and caring team of multidisciplinary specialists, board certified in infant, pediatric, adolescent and adult all...

The Allergy, Asthma & Sinus Center is one of the country's largest and most established allergy practices. We have several offices located conveniently in Greater Knoxville, as well as in Athens, Cookeville, Crossville, Johnson City, Maryville, Morristown, Mt. Juliet, Oak Ridge, Old Hickory, Sevierville, and Corbin, KY The Allergy, Asthma & Sinus Center is staffed by an experienced and caring team of multidisciplinary specialists, board certified in infant, pediatric, adolescent and adult allergy, asthma and immunology. All of our providers are dedicated to providing our patients with expert and friendly care.