Our Story
We have 2 locations - Creve Coeur and St. Peters. See our website for more information!
Dr. Robert Onder is board-certified by the American Board of Allergy and Immunology and is a Fellow of the American College of Allergy, Asthma and Immunology and the American Academy of Allergy, Asthma, and Immunology. He completed his fellowship, residency, internship and medical degree at Washington University in St. Louis. He also serves as Assistant Professor of Clinical Medicine at Washington University School of Medicine.
Dr. Sonia Cajigal is a St. Louis native returning to practice allergy and immunology. She went to University of Missouri - Kansas City medical school, after which she completed her internal medicine residency in at Case Western MetroHealth in Cleveland and her allergy fellowship at Henry Ford in Detroit.