Founder and Medical Director

Named a Top Doctor by Castle Connolly for the last 10 years, Dr. Dyan Hes is Medical Director of Gramercy Pediatrics in New York City and was a Director of the American Board of Obesity Medicine for 8 years. She is Board Certified in both pediatrics and obesity medicine, and practices both in her New York office. In addition, she serves as Clinical Assistant Professor of Pediatrics at the Weill Medical College of Cornell University and the Department of Pediatrics at NYU Grossman School of Medicine.

Dr. Hes completed her residency in Social Pediatrics at New York’s Albert Einstein School of Medicine, Montefiore Medical Center. Prior to founding Gramercy Pediatrics, she maintained a large primary care practice within Park Slope Pediatrics in Brooklyn, New York. In addition, she developed and served as Director of the Pediatric Weight Management Program at New York Methodist Hospital. In conjunction with the Park Slope YMCA, Dr. Hes created the Be Fit program for overweight children. Since its inception, the program has served as a successful model for collaboration between hospitals and community centers nationwide.

An active advocate for pediatric and adolescent nutrition and weight management, Dr. Hes was honored by Brooklyn Borough President Marty Markowitz for her efforts to combat obesity among Brooklyn youth. In 2006, she served as an Expert Witness at the New York City Department of Health Hearing to Ban Trans Fat in Restaurant Food.

Dr. Hes is a weekly medical correspondent for CBS News, WPIX News, Newsmax, NBC, MSNBC, CNN, NY1 and FOX News. She has contributed to numerous articles on pediatrics in newspapers, periodicals and internet sites including the Wall Street Journal, TIME Magazine, MSN Health, CafeMom.com, MindBodyGreen.com, Romper.com, and Parents.com. In addition to being included in New York Magazine’s 2013 Top Doctors, she is consistently named one of New York’s Top Doctors by Castle and Connolly from 2011 to present .

Dr. Hes resides in New York City with her family, her teenage son and daughter, 2 dogs, and a hamster. Her hobbies include movies, pilates, sunbathing (with sunscreen!) and power-walking. Her family lives in Chelsea and she can often be seen running errands with her kids in the neighborhood.