For over 40 years, Allergy & Asthma Affiliates (Drs. Ellenburg, Frazier, Singer, & Ellenburg) has been serving East Tennessee by providing allergy, asthma, and immunology care. As a stable and growing practice, our goal has always been and will remain to deliver high-quality medical services for our patients. We have an excellent culture and family-oriented environment that is made possible by our dedicated physicians and staff.