Dr. Castaldi is an assistant professor of medicine at Harvard Medical School. He is a graduate of Princeton University and the University of Massachusetts Medical School. He completed his medical residency at Tufts Medical Center and a master’s in clinical research at Tufts University. He is currently a member of the Channing Division of Network Medicine at Brigham and Women’s Hospital. His research focus is the use of genomic technologies and machine learning to understand the health effects of smoking and to identify molecular subtypes of chronic obstructive pulmonary disease.