Dr. Leyko

Bart Leyko, MD

Dr. Leyko joined Allergy Asthma Clinic in 2004. He completed his Internal Medicine residency at Michigan State University before completing his fellowship training in Allergy and Immunology at State University of New York at Stony Brook. Dr. Leyko is a Clinical Assistant Professor at the University of Arizona, College of Medicine. He is board certified in Allergy and Immunology as well as Internal Medicine. Read More

Dr. Couch

Christopher Couch, MD

Dr. Couch obtained his medical degree from The University of Arizona College of Medicine – Phoenix, where he currently serves as a Clinical Assistant Professor. He completed residency in Pediatrics at the University of Nevada School of Medicine, followed by a fellowship in Allergy and Immunology at the University of Michigan. Dr. Couch is board certified in Allergy & Immunology and Pediatrics, and treats both adults and children. Read More

Dr. Gaefke

Claudia Gaefke, MD

Dr. Gaefke joined Allergy Asthma Clinic in 2020. She completed her Internal Medicine residency at The University of Arizona College of Medicine-Tucson before completing her fellowship training in Allergy and Immunology at the University of South Florida. She is board-certified in Internal Medicine and board-eligible in Allergy and Immunology. Read More

Mark Schubert, MD, PhD

Mark S. Schubert, M.D., Ph.D. (Status Emeritus)

Dr. Schubert retired from Allergy Asthma Clinic in 2019. Read More