Ashley Schreier, D.O., is an Assistant Professor of Medicine within the Division of Hematology and Medical Oncology at Weill Cornell Medicine, and Assistant Attending physician at NewYork-Presbyterian Hospital. Dr. Schreier treats patients with all forms of breast cancer. She has a special interest in caring for those with triple negative breast cancer (TNBC), which has been the emphasis of her research.

Dr. Schreier received her B.S. in 2012 from Cornell University. She then entered medical school at NYIT College of Osteopathic Medicine. During her time in medical school, Dr. Schreier was inducted into the Osteopathic Scholastic Honor Society and Service Fraternity as well as the Gold Humanism Honor Society. She also received the Glasgow Rubin Achievement Award, a prestigious honor reserved for those who graduate in the top 10% of their medical school class. After graduating medical school in 2017, Dr. Schreier began her residency in Internal Medicine at the Albert Einstein College of Medicine/Montefiore Medical Center where she was awarded the Outstanding House Officer in Ambulatory Care Medicine Award as well as the Barry Mishkin Award for Humanity, Ethics, and Excellence in the Practice of Medicine. She continued her medical training at Weill Cornell Medicine and NewYork-Presbyterian (WCM/NYP) with a fellowship in Hematology and Medical Oncology. During her fellowship at WCM/NYP, Dr. Schreier focused her clinical efforts within the field of breast oncology and became involved in research projects in TNBC. Her main research focus has been developing a translational research pipeline through her collaboration with Dr. Roberta Zappasodi's laboratory and focusing on novel immunotherapy strategies in breast cancer.