CMHC Faculty Members

Faculty of Tarsus Medical Group are leaders in healthcare

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Osama Hamdy

Osama Hamdy



Osama Hamdy, MD, PhD is a world expert and recognized thought leader in area obesity and nutrition in diabetes. Dr. Hamdy is a senior endocrinologist and Medical Director of the Joslin Obesity Clinical Program and Director of the Inpatient Diabetes Program at Joslin Diabetes Center. He is also Associate Professor of Medicine at Harvard Medical School. Plus his 34 years of extensive clinical experience, he is very active in nutrition and obesity clinical research. His lab led to many innovations and discoveries that changed how we currently mange obesity in patients with either type 2 or type 1 diabetes.

Dr. Hamdy research led to the first discovery that 7% weight loss in obese patients with and without diabetes significantly improve vascular endothelial function, insulin sensitivity and markers of inflammation. This improvement may eventually prevent progression to coronary artery disease. Dr. Hamdy was a co-investigator in two landmark studies; the “Diabetes Prevention Program” and “the Look AHEAD Study”. In 2005, Dr. Hamdy founded the “Weight Achievement and Intensive Treatment (Why WAIT) program, which is currently implemented nationally and internationally with great success. His program reduces total healthcare cost by an estimated 27% and diabetes-related cost by 44% and helps patients with diabetes to be less dependent on diabetes medications. Dr. Hamdy co-chaired the task force that developed the global transcultured Diabetes Nutrition Algorithm (tDNA). His research led to several changes in the standards of diabetes care and lifestyle management by the American Diabetes Association and American Association of Clinical Endocrinologists.

Dr. Hamdy joined Joslin Diabetes Center in 1998, where he shared in developing the clinical research unit and founded the obesity clinical program and the restructured the inpatient diabetes program. At the inpatient side, he developed an Advanced Quality Improvement model for inpatient diabetes service that reduced 30-day readmission rate by 30% and also developed the EVADE program for management of diabetic ketacidosis (DKA) in emergency department that reduced ICU admission for DKA by 25%. Dr. Hamdy won the 2015 Michaela Modan Award of the American Diabetes Association for his research on long-term diabetes weight management. He was given the Compassionate Caregiver Award of the Kenneth Scwartz Center. Dr. Hamdy has more than 150 peer-reviewed original articles, reviews and book chapters. He is also the author of the Harvard Health Publication “The Diabetes Breakthrough”, which outlines his strategy for long-term diabetes weight management. He is on the editorial review board of many medical journals including Lancet, JAMA, British Medical Journal, Diabetes Care and 2 times section editor of the Current Diabetes Report.

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