Jonathan M. Ellen, M.D.

President and Physician-in-Chief

Dr. Jonathan Ellen serves as president, CEO and physician-in-chief of Johns Hopkins All Children’s Hospital and vice dean and professor of pediatrics with the Johns Hopkins University School of Medicine. With a team from both organizations, he led the integration between Johns Hopkins Medicine and All Children’s Hospital to ultimately transform All Children’s from a regional pediatric referral center to a leading pediatric academic health system focused on research, teaching and patient care.

His visionary leadership resulted in the transformation being complete in five short years.  This was acknowledged with the hospital changing its name to Johns Hopkins All Children’s Hospital in 2016. During the five-year integration process, Johns Hopkins All Children’s implemented an innovative pediatric residency program, established the hospital’s first fellowship program, and recruited world-class physicians, surgeons, researchers and staff who are dedicated to a physician-led patient-centered care delivery model.  He and his team established multidisciplinary, collaborative institutes focused on maternal, fetal and neonatal medicine, neurosciences and mental health, cancer and blood disorders, and hearts, several of which are ranked highly by U.S. News & World Report.  And, today collaborations among physicians and researchers at Johns Hopkins All Children’s Hospital in St. Petersburg and the Johns Hopkins Children’s Center in Baltimore are resulting in children having access to new clinical and translational research spanning both campuses.

Dr. Ellen also has worked with leaders of the University of South Florida Morsani College of Medicine to strengthen the research, USF residency program for which Johns Hopkins All Children’s is a teaching site, and the overall relationships between the hospital and USF. Congruently, he collaborates with a number of regional and community hospitals and providers throughout Tampa Bay to ensure that newborns and children through age 21 have access to best and optimal care.

Dr. Ellen has expanded Johns Hopkins All Children’s population health efforts with a focus on structural change to impact asthma, obesity and infant mortality. As a pioneer of this type of approach and a leader of the Adolescent Medicine Trials Network for HIV/AIDS Intervention, he serves as principal investigator for Connect to Protect®, a community coalition-based program. His past research focused on preventing sexually transmitted infections, including HIV, in adolescents and the structural and environmental factors associated with disease transmission.  Throughout his career he has received more than $25 million in research awards from the Centers for Disease Control and Prevention, National Institutes of Health and other agencies.

Dr. Ellen joined the Johns Hopkins University School of Medicine in 1999. He was named vice dean for All Children’s Hospital in 2011 and president of All Children’s Hospital in 2012.  He previously led the Center for Child and Community Health at Johns Hopkins and was director of the Department of Pediatrics and Neonatology at Johns Hopkins Bayview Medical Center. Dr. Ellen is a professor of pediatrics at the JHU School of Medicine and a professor of epidemiology and population, family and reproductive health in the Bloomberg School of Public Health. He has trained more than 40 pre- and post-doctoral fellows in adolescent medicine and public health and authored more than 200 peer-reviewed scientific articles, reviews, and editorial and book chapters.

After graduating from the University of Pennsylvania, he received his medical degree from Temple University and completed an internship and residency in pediatrics at Children’s Hospital of Philadelphia. Dr. Ellen completed a fellowship in adolescent medicine at the University of California, San Francisco (UCSF), followed by fellowships in sexually transmitted diseases at UCSF, the San Francisco Department of Public Health, and the Centers for Disease Control and Prevention.

Dr. Ellen serves on several regional and state boards.  Currently he serves as Chair of the USF Consolidation Task Force, Chair of the Board of Trustees for the Foundation for Healthy St. Petersburg, Chair of the Board of Trustees of Safety Net Hospital Alliance of Florida, President of the St. Pete Innovation District, Member of the Florida Council of 100, Member of the Board of Trustees for Florida Hospital Association, and Member of the Board of Trustees of the Straz Center.

A resident of St. Petersburg, he and his wife, Margaret de Lisser, have a son and a daughter.