Ellen K. Ritchie, MD is assistant professor of medicine and a member of the Leukemia Program at the Weill Cornell Medical College of Cornell University and the New York Presbyterian Hospital in New York City.

Dr. Ritchie graduated from Barnard College at Columbia University and received her medical degree from the College of Physicians and Surgeons at Columbia University in New York City. She was elected to the Alpha Omega Alpha Honor Society. She completed her internship and residency in internal medicine at New York Presbyterian Hospital, Columbia campus. Dr. Ritchie completed her fellowship in hematology and medical oncology at the New York Presbyterian Hospital, Columbia campus. Dr. Ritchie's research interests are in the treatment of older patients with anemia, cytopenias, myelodysplastic syndromes, myeloproliferative disorders and acute leukemia. She is interested in finding better therapies and supportive care strategies for older patients. Dr. Ritchie is the principal investigator on clinical trials investigating new diagnostic techniques, supportive care strategies and therapeutics aimed at the older patient. She collaborates with investigators in the Division of Geriatrics and Gerontology. She has been the author or co-author of many publications. She is interested in improving the medical care of older patients with hematologic malignancies.