Dr. David A. Khan is Associate Professor of Internal Medicine at the University of Texas Southwestern Medical Center in Dallas and the Director of the Asthma Clinic at Parkland Memorial Hospital and Training Program Director at the Allergy and Immunology Fellowship Program at Southwestern. Dr. Khan attended the University of Illinois in Chicago, completed a residency program at the Good Samaritan Medical Center in Phoenix, and received postgraduate training in Allergy and Immunology at the Mayo Clinic. He is board certified in Internal Medicine, and Allergy and Immunology. Dr. Khan has published articles in various scientific journals, including Annals of Allergy, Asthma, and Immunology. He is a Fellow of the American Academy of Allergy, Asthma, and Immunology and a member of the Joint Task Force on Practice Parameters for Allergy and Immunology.