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Obesity, Metabolism and Nutrition Institute
The faculty and staff at the Obesity, Metabolism and Nutrition Institute (OMNI) at Massachusetts General Hospital are leaders within their field and work together to provide educational training on obesity and advance innovation within obesity medicine.
Director, Obesity, Metabolism and Nutrition Institute, Massachusetts General HospitalAssociate Professor of Medicine, Harvard Medical SchoolDiplomate, American Board of Obesity MedicineEmail Lee M. Kaplan, MD, PhD, graduated from Harvard University and received his medical degree and doctorate in molecular biology from the Albert Einstein College of Medicine at Yeshiva University. He completed an internship and residency in internal medicine and a fellowship in gastroenterology at Mass General and Harvard Medical School and a fellowship in genetics at Brigham and Women’s Hospital.
He is director of the fellowship program in Obesity Medicine and Nutrition at Mass General, director of the Blackburn Course in Obesity Medicine at Harvard Medical School and chairman emeritus of the Campaign to End Obesity. He currently serves as chair of the Obesity, Metabolism and Nutrition Section of the American Gastroenterological Association (AGA), chair of the Bariatric Surgery Section and chair of the Clinical Committee of the Obesity Society.Dr. Kaplan’s research is focused on the physiological and molecular mechanisms of gastrointestinal regulation of energy balance and metabolic function, and his group has pioneered the development and use of rodent models for weight loss surgery and gastrointestinal devices to explore these mechanisms. He is the author of more than 150 scientific and medical papers, including in The New England Journal of Medicine, Nature, Nature Genetics, Nature Medicine, Science Translational Medicine, the Proceedings of the National Academy of Sciences, the Journal of Clinical Investigation, Gastroenterology and the American Journal of Human Genetics.
Instructor in Medicine, Harvard Medical School and Mass GeneralEmail
Jill Carmody, PhD, is an Instructor in Medicine at Mass General and Harvard Medical School conducting research at the Obesity, Metabolism and Nutrition Institute. She received her doctorate in Nutritional and Metabolic Biology in 2010 from the Institute of Human Nutrition at Columbia University. Dr. Carmody’s current research examines the physiological mechanisms underlying the profound weight loss and diabetes resolution that is observed after gastric bypass surgery.
Ida Hatoum, ScD, is a postdoctoral fellow at Mass General and Harvard Medical School conducting research at the Obesity, Metabolism and Nutrition Institute. As a doctoral student at Harvard School of Public Health, Dr. Hatoum was the inaugural recipient of the Pritzker Fellowship for Obesity Research. Upon graduating from the departments of Nutrition and Epidemiology in 2009, she joined the Obesity, Metabolism and Nutrition Institute and completed a postdoctoral Masters of Medical Science at Harvard Medical School in Computational Bioinformatics. Dr. Hatoum seeks to use computational approaches such as genomics and transcriptomics to understand the mechanisms underlying the development of human obesity and its related conditions, and to use that understanding to facilitate the development of more effective preventive treatment strategies for obesity.
Assistant in Medicine, Mass GeneralInstructor in Medicine, Harvard Medical SchoolDiplomate, American Board of Obesity MedicineEmail
Sriram Machineni, MD, is an obesity medicine specialist at the Mass General Weight Center and serves on the faculty of the Mass General Obesity Metabolism and Nutrition Institute. Dr. Machineni is the assistant director of the Blackburn Course in Obesity Medicine at Harvard Medical School and the co-director of the Obesity Medicine Board Review Course. He is fellowship-trained in obesity medicine at Mass General, board-certified in internal medicine and a 2012 Diplomate of the American Board of Obesity Medicine.
Dr. Machineni specializes in treatment of obesity and its accompanying complications and has extensive expertise in obesity pharmacotherapy. His research focuses on the mechanisms of energy regulation after weight loss surgery to help develop new therapies for obesity. His teaching interests include the development of new tools and approaches for the treatment of obesity in the primary care setting, and he leads a program to educate primary care practitioners at Mass General on the use of a staged approach to the management of obesity.
Dorothy Pazin, PhD, is the research program manager for the Obesity, Metabolism and Nutrition Institute at Mass General. After completing a doctorate in genetics and genomics at Boston University School of Medicine, Dr. Pazin worked as a post-doctoral fellow at the Harvard School of Dental Medicine. She serves as both the administrative director and the scientific director of the Obesity, Metabolism and Nutrition Institute.
Postdoctoral Fellow in Medicine at Harvard Medical SchoolEmail
M. Agostina Santoro, PhD, is a postdoctoral fellow at Massachusetts General Hospital and Harvard Medical School, conducting research at the Obesity, Metabolism and Nutrition Institute. She received her doctorate in Cell and Molecular Physiology in 2015 from the University of North Carolina at Chapel Hill.
Dr. Santoro’s current research uses mouse models and ‘-omics’ technologies to identify key molecular mechanisms underlying weight loss and improvement of glucose homeostasis.
Assistant in Medicine, Mass General Instructor in Medicine, Harvard Medical SchoolDiplomate, American Board of Obesity MedicineEmail
W. Scott Butsch, MD, MS, is an obesity medicine specialist at the Mass General Weight Center and an instructor in medicine at Harvard Medical School. He completed a clinical nutrition fellowship at the University of Alabama at Birmingham and was one of the two inaugural fellows in the obesity medicine and nutrition subspecialty fellowship program, which was first established at Mass General and Harvard Medical School in 2007. He is board-certified in internal medicine, nutrition and obesity medicine.
Dr. Butsch’s clinical interests focus on the management and treatment of obesity, including combination pharmacological treatment of obesity and the complications of weight loss surgery. He is actively involved in medical education with a primary focus on incorporating nutrition and obesity in the medical school curriculum and training programs. He leads the training and education of medical students, residents, subspecialty fellows at Mass General in obesity medicine and clinical nutrition. At Harvard Medical School, he is the director of education in the Division of Nutrition and the Introduction to Clinical Nutrition course. He was selected as a fellow in medical education in 2010 and was awarded an industry education grant to create a web-based obesity curriculum at Harvard Medical School.
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