Throughout his long career, Dr. Kaplan has made an important mark on the Allergy/Immunology specialty through his work as a physician scientist and as a beloved mentor to many in our field. Dr. Kaplan has served at the highest levels of leadership within the specialty. He held the office of President of the American Academy of Allergy Asthma &Immunology in 1989, served as the President of the Clinical Immunology Society in 1990 and became the second American to lead the World Allergy Organization during his time as President from 2000 to 2003. Dr. Kaplan has authored more than 350 articles, monographs, and editorials, and he edited the textbook titled Allergy, which has been utilized in training programs throughout the world. Dr. Kaplan’s research interests focus on inflammatory mechanisms of allergic disease and he is a world-renowned authority on the mechanisms and treatment of urticaria and angioedema.