David Khan, MD is Professor of Internal Medicine at the University of Texas Southwestern Medical Center in Dallas; Training Program Director for the Allergy & Immunology fellowship program at Southwestern; and Director of the Asthma Clinic at Parkland Memorial Hospital. He is a co-author of Drug Allergy Testing.

Dr. Khan received his medical degree from the University of Illinois. After completing an Internal Medicine residency at the Good Samaritan Medical Center in Phoenix, he went on to fellowship training in Allergy & Immunology at the Mayo Clinic.

Dr. Khan is Past President of the Texas Allergy, Asthma and Immunology Society and is a member of the Joint Task Force on Practice Parameters for Allergy & Immunology. He has also been a three-time recipient of the Outstanding Teacher Award at Southwestern.

His research interests include mood disorders in asthma, rush immunotherapy, and alternative therapies for chronic urticaria.