Dr. Mahmoudi practices internal medicine, allergy, and immunology in California. He has published or edited numerous scientific papers and 9 books related to allergy and immunology, including the best-selling Immunology Made Ridiculously Simple. He was a medical columnist for local newpapers and the San Francisco Chronicle, has spoken locally and nationally on allergy and immunology, and appeared on local television and Fox News. Dr. Mahmoudi is currently president of the American Osteopathic College of Allergy and Immunology and on the faculties of the University of California San Francisco, Rowan University, and Touro University.