Dr. Rebecca Sunenshine serves as Medical Director for the ASU Health Observatory, overseeing population health and healthcare applied research after retiring from a 21-year career in federal, state, and local public health. She is a retired Captain in the US Public Health Service, served as the Chief Medical Officer for the Maricopa County Department of Public Health in 2024, and previously served for 18 years as a CDC Career Epidemiology Field Officer, assigned to the Arizona Department of Health Services for 4 years and Maricopa County Public Health for 15 years.  She trained in internal medicine and infectious diseases at the Oregon Health & Science University and completed the CDC Epidemic Intelligence Service Fellowship in the Division of Healthcare Quality Promotion in 2006. Her more than 60 publications include a broad range of public health topics, including infectious disease epidemiology, coccidioidomycosis, healthcare-associated infections, and the health effects of heat.