As the Chief of the Maternal Fetal Medicine (MFM) division and the Hillary Rodham Clinton Professor of Women's Health, Dr. Simpson supports a skilled team of physicians with expertise in maternal medicine, critical-care obstetrics, prenatal pediatrics, high-risk deliveries, and research, offering the best maternal and fetal care in the region. She also serves as a leader at CUIMC's Carmen and John Thain Center for Prenatal Pediatrics, where patients with pregnancies complicated by fetal malformations, genetic syndromes, or multiple gestations receive comprehensive, multidisciplinary care in a state-of-the-art facility.

As former Director of CUIMC's Ob/Gyn Ultrasound program, she has assembled an outstanding group of sonographers and physicians to provide the best available sonographic imaging to women with high-risk pregnancies. Dr. Simpson's specialized training in fetal echocardiography complements her expertise in prenatal diagnosis. She performs invasive fetal procedures such as chorionic villus sampling, amniocentesis, fetal blood sampling, and others required in complex cases, including, fetoscopy and laser photocoagulation for twin-twin transfusion syndrome. Dr. Simpson has served on the board of directors for the Society of Maternal Fetal Medicine, and was a recipient of the Leonard Tow Humanism in Medicine Award in 2010.