Elizabeth A. Bayliss, MD, MSPH, is a senior investigator at the Institute for Health Research, Kaiser Permanente Colorado, and professor of family medicine at the University of Colorado School of Medicine. Her research focuses on processes of care and methods for studying care delivery for patients and populations with complex care needs. She is also interested in the interaction between health policy and care delivery for this population. Dr. Bayliss completed her medical training at the University of Colorado Denver, where she also received her master of science in public health degree. She has served as principal investigator on studies of competing demands affecting individuals with complex care needs, developing quality measures for complex patients, assessing the impact of primary and specialty care continuity within an integrated delivery system, and improving medication prescribing practices for older adults with multiple chronic medical conditions.