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The Jonathan S. Lewin, M.D. Professorship in Radiology

School of Medicine
Radiology

Established in 2025 by by Alumni, Colleagues, Family and Friends

JONATHAN S. LEWIN, M.D., is Professor of Radiology and Imaging Sciences, Biomedical Engineering, and Neurosurgery in the Emory University School of Medicine and Professor of Health Policy and Management in the Rollins School of Public Health at Emory. Until September 2022, he also served as the Executive Vice President for Health Affairs at Emory University, Executive Director of the Woodruff Health Sciences Center, and CEO and Chairman of the Board, Emory Healthcare. Dr. Lewin is a national leader in academic medicine strategy and integrated health care delivery and an international scientific leader in interventional and intraoperative MRI.

From 2004 until 2016, Dr. Lewin served as the Martin Donner Professor and Director of the Russell H. Morgan Department of Radiology and Radiological Science and Radiologist-in-Chief at Johns Hopkins Medicine. From 2012 to 2016, he also served as Co-Chair for Strategic Planning and, from 2013 to 2016, as Senior Vice President for Integrated Healthcare Delivery for Johns Hopkins Medicine. Before joining the faculty of Johns Hopkins, Dr. Lewin was Director of Magnetic Resonance Imaging at the University Hospitals of Cleveland and Professor and Vice Chairman of the Department of Radiology at Case Western Reserve University.

Dr. Lewin received his undergraduate degree in chemistry from Brown University in 1981 and his medical degree from Yale University in 1985. Following his internship in pediatrics at Yale-New Haven Hospital and his residency in diagnostic radiology at the University Hospitals of Cleveland, he completed a magnetic resonance research fellowship in Germany, a neuroradiology fellowship at the Cleveland Clinic, and additional training in head and neck radiology at the Pittsburgh Eye and Ear Hospital.

A pioneer in interventional and intraoperative MR imaging, Dr. Lewin has published more than 200 peer-reviewed scientific manuscripts and over 70 book chapters, reviews, commentaries, and other invited papers on topics such as the basic science and clinical aspects of interventional MR imaging, functional MRI, head and neck imaging, MR angiography, and the imaging of acute stroke.

Dr. Lewin holds 28 United States and seven international patents. He has been principal or co-principal investigator on NIH and other federal and state grants with awards totaling more than $54 million. He is a Fellow of the International Society for Magnetic Resonance in Medicine, the American College of Radiology, and the National Academy of Inventors. He is a past president of the Society of Chairs of Academic Radiology Departments, the American Roentgen Ray Society, the Association of University Radiologists, the International Society for Strategic Studies in Radiology, and the Academy for Radiology Research. Currently, he serves as a director or trustee on governing and advisory boards at a number of institutions, including the Yale University School of Medicine, the Yale-New Haven Health System, the Kaiser Health Plan and Hospitals, the University of Iowa, the Center for Women in Academic Medicine and Science, and the Emory Empathetic AI Health Institute.

The recipient of numerous awards and accolades, Dr. Lewin was named one of the 50 Most Influential Physicians of 2017 by Modern Healthcare; one of the Most Influential Atlantans (2016 – 2022) by the Atlanta Business Chronicle; one of the 100 Most Influential Georgians (2016 – 2022) by Georgia Trend; one of the Atlanta 500 by Atlanta Magazine (2019-2023); and one of the Atlanta Business Chronicle’s Most Admired CEOs for 2020. He has received Gold Medal Awards from three professional societies for distinguished service and contributions to the field of radiology (Radiology Society of North America, the American Roentgen Ray Society, and the Association of University Radiologists), was the 2019 recipient of the National Medical Fellowships Pioneer Award, and is a past recipient of the Radiology Research Alliance’s Innovation and Leadership Award, as well as the Leadership Luminary Award from the Radiology Leadership Institute of the American College of Radiology.

Held by Peter B. Barker

PETER B. BARKER, D.Phil., is a Professor of Radiology and Oncology and Director of the Division of Magnetic Resonance Research in the Russell H. Morgan Department of Radiology and Radiological Science at Johns Hopkins Medicine.

Dr. Barker has been active in research on magnetic resonance for more than four decades and specializes in neuroimaging, in particular magnetic resonance spectroscopy (MRS) and advanced magnetic resonance imaging (MRI) techniques for the evaluation of the human brain. His research has focused both on technical development, as well as the application of MRS and MRI for the improved understanding and diagnosis of neurological, psychiatric, and oncological diseases.

Dr. Barker received both his undergraduate degree in chemistry, with first-class honors, and his doctoral degree in physical chemistry from Oxford University in the United Kingdom. He was a postdoctoral research fellow at the California Institute of Technology and the Huntington Medical Research Institutes before moving to Baltimore in 1989 to join the Johns Hopkins faculty as an Assistant Professor in the Division of MR Research in the Russell H. Morgan Department of Radiology and Radiological Science. From 1994 to 1997, he was a member of the senior scientific staff in the Department of Neurology at the Henry Ford Hospital in Detroit, while also serving as an adjunct Associate Professor of Medical Physics at Oakland University in Rochester, Michigan. Dr. Barker was recruited back to Johns Hopkins in 1997 as Associate Professor of Radiology in the Division of Neuroradiology and was promoted to full Professor in 2002.

Dr. Barker has published more than 300 original peer-reviewed journal articles and more than 40 commentaries, review articles, and book chapters. He has edited three books on clinical MR neuroimaging clinical MR spectroscopy and clinical MR perfusion imaging, and his publications have been cited more than 33,000 times.

With continuous funding from the National Institutes of Health (NIH) over the past 30 years, Dr. Barker has been the recipient of numerous research grants. He is a recipient of the American Heart Association’s Established Investigator Award, and in 2024, he received the International Society for Magnetic Resonance in Medicine (ISMRM) MRS Study Group Career Award for MRS Clinical Applications and Discovery Science.

Dr. Barker is a frequent reviewer for funding agencies such as the NIH, including for the Obama BRAIN initiative, and has given more than 210 invited lectures worldwide. He is a Fellow and former trustee of the ISMRM and has also served on the executive and research committees of the American Society of Neuroradiology, as well as the neuroradiology committee of the Radiological Society of North America. He served on the Johns Hopkins Medicine Institutional Review Board for more than a decade.

Dr. Barker is also an editor for the journals Magnetic Resonance in Medicine, NMR in Biomedicine, and the Journal of Neuroimaging, and has served as a reviewer for more than 30 international journals, including Radiology, American Journal of Neuroradiology, European Journal of Radiology, Annals of Neurology, Nature Medicine, and others.