Her areas of clinical expertise include allergy and immunology, asthma and chronic obstructive pulmonary disease. Dr. Hansel serves as associate dean for research for Johns Hopkins Medicine and chair of the Johns Hopkins Bayview Scientific Advisory Board.She earned her M.D. from Harvard Medical School and her M.P.H. from the Johns Hopkins Bloomberg School of Medicine. She completed her residency at the Hospital of the University of Pennsylvania and performed a fellowship in pulmonary medicine at Johns Hopkins. Dr. Hansel joined the Johns Hopkins faculty in 2004.Dr. Hansel's research interests include genetic and environmental determinants of obstructive airway diseases.She serves as the assistant director for research for the Department of Medicine’s pulmonary division and directs the Obstructive Lung Disease Research Group.