After graduating from Tufts School of Medicine and completing a surgical residency at NYU Medical Center and a laparoscopic fellowship at Mt. Sinai Medical Center, Dr. Ren founded the NYU bariatric program. Dr. Ren has lectured both nationally and internationally on laparoscopic bariatric surgery, but is most well known for her extensive experience with gastric banding. She performed more than 3,000 bariatric operations in her career.