Mallar Bhattacharya is an Associate Professor in the Division of Pulmonary and Critical Care, Allergy, and Sleep Medicine at University of California, San Francisco.

After earning a bachelor's degree at Harvard College and a master's degree in neuroscience at the University of Oxford, Bhattacharya attended Harvard Medical School. He completed a residency in internal medicine at Johns Hopkins Hospital, followed by a fellowship in pulmonary and critical care medicine at UCSF. He also did research training at the UCSF Lung Biology Center.

Bhattacharya's research interests include pneumonia, septic shock and severe asthma.