Dr. Gattu is an endocrinologist at Massachusetts General Hospital and an Instructor at Harvard Medical School. He did his post-doctoral training at Yale School of Medicine, followed by his clinical/research fellowship at Brigham and Women’s Hospital and Joslin Diabetes Center under the mentorship of Dr. Ronald Kahn.

Dr. Gattu's research focuses on 1) how insulin signaling is altered in insulin resistance, obesity, and type 2 diabetes, 2) how altered hormonal signaling causes abnormalities in ectopic fat accumulation, and 3) how the genes interact with the environment, that is, nutrition in these processes. He uses patient-derived human iPS cells and genetically engineered rodent models to address these.His clinical interests are understanding hypertriglyceridemia, metabolic dysfunction-associated steatotic liver disease (MASLD), and lipodystrophy. His other clinical interests include understanding lipid and metabolic disorders in South Asians (Current Research Studies).