Dr. Tracy attended medical school at the Georgetown University School of Medicine, and did a residency in obstetrics and gynecology at the State University of New York at Buffalo, followed by a Masters in Public Health at the Harvard School of Public Health. She currently is  an Associate Professor in Obstetrics, Gynecology and Reproductive Biology at Harvard Medical School.

Dr. Tracy is a past national chair of the American College of Obstetricians and Gynecologists (ACOG) Junior Fellows, and was the first young fellow on ACOG's Executive Board. She has also served  as an ACOG delegate to the American Medical Association (AMA). She is a past chair of the AMA's Women Physicians Congress.  She has also served on several Massachusetts Medical Society committees. She currently serves as the ACOG District I Secretary.

Locally, she is a member of the Massachusetts General Hospital's Women in Academic Medicine committee, and the Resident Education Committee for the BWH/MGH Integrated Residency in OB/GYN. She also serves as the director of the Vincent Obstetrics and Gynecology Grand Rounds, the director of the faculty mentoring program, and the director of the residency mentoring program. She has authored a number of resolutions that subsequently became AMA policy, including issues addressing the issue of physician re-entry into the workplace, domestic violence, evidence-based policy making in the HOD, midwifery licensure, home deliveries, and direct to consumer advertising of genetics tests. 

She has also given lectures and published about a number of issues including health literacy, maternal mortality, fetal alcohol syndrome, intimate partner violence, the legislative interference in the practice of medicine and human trafficking.