She began her career at the University of Chicago as an assistant professor in the Department of Pediatrics section of Anesthesia and Critical Care. She completed the MacLean Ethics Fellowship and became active in ethics consults. During her career, she was promoted to associate professor, a co-director of the Clinical Ethics Consultation Service, and an assistant director of the MacLean Center for Clinical Medical Ethics. She was also active in Pediatric Research in Medical Ethics (PRIME). Tracy was the doctor caring for pediatric patients in the burn unit as well as her assignment in the PICU. In addition, Tracy was passionate about protecting the results of human subjects in research and served as vice-chair of the University of Chicago Institutional Review Board for many years. In 2020, Tracy was named the Distinguished Clinician in the Distinguished Faculty Awards at the University of Chicago.