Dr. Hirschhorn also serves as a Senior Policy Advisor for Partners In Health (PIH) in improvement science, an international non-profit organization that provides direct health care and social services to poor communities around the world, supported by research and advocacy. She completed her residency in Internal Medicine at Beth Israel (BI) Hospital and a fellowship in Infectious Diseases at the combined BI/BWH/Dana Farber program. Dr. Hirschhorn also received a Master’s in Public Health at Harvard School of Public Health.