Brian J. Yun graduated with an MD and MBA from Tufts University School of Medicine, where he was also named to the AOA Honor Society. After finishing his residency in emergency medicine at the combined Brigham and Women’s Hospital and Massachusetts General Hospital Harvard Affiliated Emergency Medicine Residency, Dr. Yun completed an Emergency Department Administration Fellowship at Massachusetts General Hospital. He has an MPH in Clinical Effectiveness from the Harvard T.H. Chan School of Public Health.

He serves as the Medical Director of the Emergency Department Observation Unit and Associate Director of Clinical Operations of the Emergency Department. He is board certified in emergency medicine and is an Assistant Professor of Emergency Medicine at Harvard Medical School.