Dr. Bart Leyko is a board-certified allergist and immunologist and the President and CEO of Allergy Asthma Clinic, Ltd. in Central Phoenix. The clinic opened in 1969 as Arizona’s first practice focused only on allergies. He joined in 2004 and became Medical Director in 2010. Dr. Leyko earned his medical degree at Jagiellonian University in Poland, trained in internal medicine at Michigan State University in Grand Rapids, and completed an allergy and immunology fellowship in New York. He is a Clinical Assistant Professor at the University of Arizona College of Medicine.
(602) 277-3337
300 W. Clarendon Ave., Suite #120, Phoenix, AZ, 85013
Top3Doctors.com selected Dr. Bart Leyko as a top allergist in Phoenix because of his dual board certification, his twenty years with one practice, and his teaching role. He is a diplomate of the American Board of Allergy and Immunology and the American Board of Internal Medicine. Dr. Leyko earned his medical degree at Jagiellonian University in Poland and trained in internal medicine at Michigan State University in Grand Rapids. After that, he completed an allergy and immunology fellowship in New York. Today he also teaches as a Clinical Assistant Professor at the University of Arizona College of Medicine.
What we like most about Dr. Leyko is his long tie to one Phoenix practice. He joined Allergy Asthma Clinic, Ltd. in 2004, became its Medical Director in 2010, and has led it as President and CEO since 2019. The clinic was founded in 1969 and calls itself Arizona’s first practice focused only on allergies. Its Central Phoenix office on West Clarendon Avenue offers allergy tests and shots, asthma care, food allergy testing, aspirin desensitization, and treatment for hives, eczema, and chronic cough. For these reasons, Top3Doctors.com proudly names Dr. Bart Leyko among the top three allergists in Phoenix.
Top3doctors.com Copyright @2026