Ann M. Defnet, MD, FACS, DABOM

After a lovely childhood in Wisconsin, Dr. Defnet earned her BS in Biology magna cum laude at the University of St. Thomas in Minneapolis, MN in 2008. She graduated from Loyola University Chicago Stritch School of Medicine Cum Laude in 2012. She completed her General Surgery Residency at New York University in 2019, including a Research Fellowship in ECMO at the University of Chicago 2015-2016. She completed Fellowship Training in Minimally Invasive and Advanced GI Surgery at Emory University in 2020. She is Board Certified in both general surgery (2019) and obesity medicine (2023), and is a Fellow of the American College of Surgeons (2024).

She is thrilled to join the One Surgery and Surgical Specialists of Great NY teams after many years of practice at Northwell Health in both Suffolk and Nassau Counties on Long Island. She specializes in minimally invasive and robotic surgeries including gallbladder removal; ventral, incisional, and inguinal hernia repair; foregut surgery such as hiatal hernia and reflux surgery; and weight loss surgery. She also offers comprehensive weight management services, including medically assisted weight loss with GLP1 and other medications. She enjoys sharing her personal experience with weight loss surgery with her patients, and truly loves creating a personal relationship with each patient. She lives with her family in Westchester, and you can find her in the basement doing pilates when she gets a spare moment.