Professor Green earned her doctorate in Operations Research from Yale University. Her research, which has focused on the development and application of mathematical models of service systems, has resulted in dozens of publications in the premier technical journals such as Operations Research and Management Science as well as prominent healthcare journals such as Health Services Research, Inquiry and Academic Emergency Medicine. Her current research focuses on improving the delivery of healthcare by providing policy insights and operational methodologies to increase efficiency, effectiveness and access. Specific projects include reducing delays for emergency care, providing timely access to primary care, the development of new nurse staffing methodologies and the identification of primary physician and hospital bed capacity needs. She is co-founder and co-director of the Columbia Alliance for Healthcare Management, a unique partnership of the College of Physicians and Surgeons, the Mailman School of Public Health and the Business School, dedicated to promoting interdisciplinary research and education in healthcare management. She has been a consultant for both private and public sector organizations and has served on several advisory boards. Prior to joining Columbia, she worked at AT&T and Bell Laboratories. She has been an Associate Editor for Management Science and Operations Research and the Department Editor for Public Sector Applications for Management Science. In recognition of her professional achievements, Professor Green was elected a Fellow of INFORMS.