Dr. Hersh’s clinical interests include asthma, chronic obstructive pulmonary disease (COPD) and emphysema. He has authored over 80 peer-reviewed publications, with the majority of his research focusing on the ability of genetics, genomics and epidemiology to improve precision in diagnosis and treatment of COPD. He serves as co-director of the BWH clinical center in the nationwide COPDGene Study sponsored by the National Heart, Lung, and Blood Institute (NHLBI) and as principal investigator of several other COPD studies, including a pharmacogenomics ancillary study to the NHLBI-funded Long-term Oxygen Treatment Trial.