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Dean Ellen J. MacKenzie

A Life in Public Health

Dean Ellen J. MacKenzie is one of the foremost experts in the field of trauma services and outcomes research.

She is a longtime member of the Bloomberg School faculty and has authored more than 240 publications. A biostatistician by training, MacKenzie’s lifelong work evaluating and improving patient outcomes following trauma has helped define the field.



Elected to the National Academy of Medicine.


Appointed 11th Dean of the Bloomberg School.

Named a Bloomberg Distinguished Professor in recognition of her interdisciplinary achievements in trauma care and rehabilitation and in support of her continued work in the area.


Honored by the CDC as one of 20 leaders and visionaries who have made a transformative effect on the field of violence and injury prevention.


With funding from the Department of Defense, established the Major Extremity Trauma Research Consortium (METRC), a research network of more than 50 civilian and military trauma centers around the country—the largest effort of its kind in trauma.


Authored the National Study on the Costs and Outcomes of Trauma Care (NSCOT), a widely cited study showing that a person’s risk of dying from a major trauma was reduced by 25 percent if treated in a trauma center versus a non-trauma center.


Elected President of the American Trauma Society.

Named Fred and Julie Soper Professor and Chair of the Department of Health Policy and Management at the Bloomberg School.


Presented with the Ann Doner Vaughan Kappa Delta Award from the American Academy of Orthopaedic Surgeons for her work on the Lower Extremity Assessment Project (LEAP)—a study that has had a major influence on the field of trauma orthopedics, resulting in over 35 scientific publications.


Served as senior associate dean for academic affairs at the Bloomberg School through 2000.


Named Honorary Fellow of the American Association for Surgery of Trauma.

Named director of the Johns Hopkins Center for Injury Research and Policy, a position she held for 11 years.


Elected President of the Association for the Advancement of Automotive Medicine.


With Dorothy Rice, authored The Cost of Injury in the United States, a comprehensive effort to estimate the direct and indirect costs of injury. This book was, for many years, the principal resource on the subject.


Awarded PhD in Biostatistics from the Bloomberg School; joined the Bloomberg School faculty.


Earned ScM in Biostatistics from the Bloomberg School.