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Ellen J. MacKenzie, PhD ’79, ScM ’75, is the 11th dean of the Johns Hopkins Bloomberg School of Public Health.

Dean MacKenzie leads the School’s efforts to find lifesaving solutions across a broad range of issues, including obesity, addiction, violence, injury, infectious diseases and environmental challenges.

She was elected to the National Academy of Medicine in 2018. And in 2012, the CDC named her as one of 20 leaders who have had a transformative effect on violence and injury prevention in the past 20 years.

An internationally recognized researcher on improving trauma care systems and policy, MacKenzie was named a Bloomberg Distinguished Professor in 2017, recognizing her interdisciplinary work in the field.