Julie Ann Sosa, MD MA FACS is the Leon Goldman MD Distinguished Professor of Surgery and Chair of the Department of Surgery at UCSF, where she is also a Professor in the Department of Medicine and affiliated faculty for the Philip R. Lee Institute for Health Policy Studies. Her clinical interest is in endocrine surgery, with a focus in thyroid cancer. She is an NIH- and FDA-funded investigator and author of 350 peer-reviewed publications and 80 book chapters and reviews, all largely focused on outcomes research, health care delivery, hyperparathyroidism, and thyroid cancer, with a focus on clinical trials. She has authored or edited 7 books. Dr Sosa is Treasurer of the American Thyroid Association (ATA) and serves on the Board of Directors of the ATA and International Thyroid Oncology Group, as well as practice guidelines committees for the ATA, NCCN, and the American Association of Endocrine Surgeons; for the ATA, she is chairing the committee responsible for writing the next iteration of differentiated thyroid cancer guidelines. She is the Editor-in-Chief of the World Journal of Surgery and is an editor of Greenfield’s Surgery: Scientific Principles and Practice. She has mentored 90 learners, for which she was recognized with induction as a full member to the American College of Surgeons Academy of Master Educators in 2020. Dr Sosa was born in Montreal and raised in upstate New York. She received her AB at Princeton, MA at Oxford, and MD at Johns Hopkins, where she completed the Halsted residency and a fellowship.