Peck Ong, MD, is Associate Professor of Clinical Pediatrics at University of Southern California. He is a diplomate of the American Board of Allergy and Immunology. Dr. Ong specializes in atopic dermatitis (eczema), food allergy and asthma. He has written multiple research and review articles on these topics. Most notable is his New England Journal of Medicine paper that showed low defensin level in atopic dermatitis patients.