Dr. Costa's research program promotes evidence-based care and policy in seniors and geriatric care. His program of research makes use of health information and technology to develop better models of care and decision support systems in home and community care, emergency departments, and acute care. His current work is focused on the development and evaluation of models of care for avoidable emergency department use and care of the elderly in emergency departments. He is an interRAI Fellow where he is engaged in the Network of Excellence in Acute Care (www.interRAI.org).Dr. Costa’s work makes use of large health care data repositories, multi-site prospective cohort studies, and pragmatic trial methods. He also has an active interest in the development and use of funding and performance systems in health care reform.