Johns Hopkins All Children's Heart Institute

Meet Our Team

Recognized as a Top 50 Children’s Cardiology & Heart Surgery Program by US News & World Report 2017-2018


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Heart Institute Directors

Plato John Alexander,  M.D.

Dr. Alexander is interim director of the cardiovascular intensive care unit in the Johns Hopkins All Children’s Heart Institute. He joined the hospital staff in July, 2016.

Dr. Alexander earned his medical degree at the University of Texas Medical School in Houston. He trained in pediatrics at the University of South Florida College of Medicine/Johns Hopkins All Children’s Hospital and served as chief resident in general pediatrics. He then completed a pediatric critical care fellowship at Duke University Children’s Hospital in Durham, North Carolina. Dr. Alexander also holds a M.B.A. with an emphasis in health sector management and policy from the University of Miami.

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Jeffrey P Jacobs, M.D.

Jeffrey P. Jacobs, M.D., FACS, FACC, FCCP is Chief of the Division of Cardiovascular Surgery and Director of the Andrews/Daicoff Cardiovascular Program at Johns Hopkins All Children’s Heart Institute. He is Professor of Cardiac Surgery at Johns Hopkins University. He is also Surgical Director of the Heart Transplantation Program and Director of the Extracorporeal Life Support Program at Johns Hopkins All Children’s Heart Institute. Dr. Jacobs has been a cardiothoracic surgeon at Johns Hopkins All Children’s Hospital since 1998.

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Gary Stapleton, M.D.

Dr. Stapleton is a pediatric interventional cardiologist and serves as Johns Hopkins All Children’s division chief of pediatric cardiology and medical director of the cardiac catheterization lab at the Johns Hopkins All Children’s Heart Institute. Dr. Stapleton is active in research and education in interventional cardiology and has launched innovative techniques at Johns Hopkins All Children’s to treat congenital heart disease without the need for open heart surgery. He did a pediatric residency with San Antonio Uniformed Services in Texas and was a general pediatrician at Eglin Air Force Base before completing both a pediatric cardiology fellowship and pediatric interventional fellowship at Baylor College of Medicine and Texas Children’s Hospital in Houston.

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Cardiac Critical Care

Plato John Alexander,  M.D.

Dr. Alexander is interim director of the cardiovascular intensive care unit in the Johns Hopkins All Children’s Heart Institute. He joined the hospital staff in July, 2016.

Dr. Alexander earned his medical degree at the University of Texas Medical School in Houston. He trained in pediatrics at the University of South Florida College of Medicine/Johns Hopkins All Children’s Hospital and served as chief resident in general pediatrics. He then completed a pediatric critical care fellowship at Duke University Children’s Hospital in Durham, North Carolina. Dr. Alexander also holds a M.B.A. with an emphasis in health sector management and policy from the University of Miami.

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Cardiovascular Surgery

Nhue Lap Do, M.D.

Dr. Do specializes in congenital cardiothoracic surgery at the Johns Hopkins All Children’s Heart Institute. He is an assistant professor of surgery at the Johns Hopkins University School of Medicine. He received his medical degree from the Keck School of Medicine at the University of Southern California.
Dr. Do trained at the Beth Israel Deaconess Medical Center at Harvard University in Boston, Massachusetts, specializing in general surgery and a postdoctoral fellowship in abdominal transplantation.

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Jeffrey P Jacobs, M.D.

Jeffrey P. Jacobs, M.D., FACS, FACC, FCCP is Chief of the Division of Cardiovascular Surgery and Director of the Andrews/Daicoff Cardiovascular Program at Johns Hopkins All Children’s Heart Institute. He is Professor of Cardiac Surgery at Johns Hopkins University. He is also Surgical Director of the Heart Transplantation Program and Director of the Extracorporeal Life Support Program at Johns Hopkins All Children’s Heart Institute. Dr. Jacobs has been a cardiothoracic surgeon at Johns Hopkins All Children’s Hospital since 1998.

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Tom R. Karl, M.D.

Before joining the Johns Hopkins All Children’s Heart Institute, Dr. Karl was a professor of surgery at the University of Queensland, and consultant cardiothoracic surgeon and director of research, Queensland Paediatric Cardiac Service, Mater Children’s Hospital, Brisbane, Australia. His areas of surgical expertise include all aspects of pediatric/congenital cardiothoracic surgery and intensive care, including neonatal heart surgery, cardiopulmonary transplantation, circulatory support, valve surgery and repairs for complex adult congenital heart diseases. He has published more than 140 articles in peer-reviewed journals and has been invited to speak and lecture around the world.

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Cardiology

Alfred Asante-Korang, M.D.

Dr. Asante-Korang, is pediatric cardiologist with the Johns Hopkins All Children’s Heart Institute, has been working with congenital heart disease and heart transplant patients for more than 20 years. Dr. Asante-Korang graduated from the University of Ghana Medical School, where he completed an internship in pediatrics. He is a fellow of the American College of Cardiology and a member of the Royal College of Physicians, United Kingdom.

Dr. Asante-Korang completed pediatric residencies at the University of Liverpool in the United Kingdom and the University of Chicago, as well as fellowships in pediatric cardiology at the IWK Children’s Hospital in Halifax, Canada and Children’s Hospital of Pittsburgh. He also holds an Advanced Diploma in Data and Systems Analysis from University of Oxford, England.
 

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Marguerite (Peggy) Crawford, M.D.

Dr. Crawford is a general pediatric cardiologist and director of cardiac MRI (magnetic resonance imaging) imaging at the Johns Hopkins All Children’s Heart Institute. She is an assistant professor of pediatrics with the Johns Hopkins University School of Medicine. After graduating from the University of Louisville School of Medicine, she completed a pediatric residency, served as chief pediatric resident and then did her pediatric cardiology fellowship at the University of Virginia. Dr. Crawford obtained additional training in cardiac MRI imaging during her fellowship at Virginia and also was a fellow in cardiac MRI at Children’s Hospital Boston.

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Jamie Andrew Decker, M.D.

Dr. Decker is a pediatric cardiologist specializing in electrophysiology, cardiac arrhythmias, cardiomyopathies and heart failure. He offers innovative and minimally invasive techniques to benefit patients at the Johns Hopkins All Children’s Heart Institute. Before joining Johns Hopkins All Children’s Hospital, Dr. Decker was an assistant professor of pediatrics at Baylor College of Medicine and Texas Children’s Hospital in Houston, where he completed a fellowship in pediatric cardiology, an advanced fellowship in heart failure/transplantation, and an advanced fellowship in pediatric electrophysiology at Baylor College of Medicine. A graduate of Robert Wood Johnson Medical School in Camden, New Jersey, Dr. Decker did his pediatric residency training at Children’s National Medical Center in Washington, D.C. 

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Grace Freire, M.D.

Dr. Freire evaluates and treats patients with complex congenital heart disease, including congenital heart disease detected before birth. She is a general pediatric cardiologist and an assistant professor of pediatrics with the Johns Hopkins University School of Medicine. She has expertise in transthoracic and transesophageal echocardiography and broad experience in fetal cardiology, including treatment of fetal arrhythmias and fetal heart failure. Dr. Freire is actively involved in research in fetal medicine and echocardiography and education. She completed her pediatric residency at Flushing Hospital, New York and a fellowship in pediatric cardiology at Hope Children’s Hospital, Chicago. 

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Monesha Gupta, M.D.

Pediatric cardiologist Monesha Gupta, M.D., M.B.B.S., joined the Johns Hopkins All Children’s Heart Institute after more than a decade on the pediatric cardiology faculty at Children’s Memorial Hermann Hospital and the University of Texas Medical School, Houston, where she was director of advanced cardiac imaging. Her clinical expertise includes multimodality cardiac and vascular imaging. Dr. Gupta completed a pediatric residency at Hurley Medical Center, Michigan State University, Flint and a pediatric cardiology fellowship at New York Presbyterian Hospital, Cornell University and Columbia University College of Physicians and Surgeons in New York. She is a fellow of the American College of Cardiology, the American Academy of Pediatrics and the American Society of Echocardiography.

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Carrie Herbert, M.D.

Pediatric interventional cardiologist Carrie Herbert, M.D., has joined the Johns Hopkins All Children’s Heart Institute and All Children’s Specialty Physicians. Dr. Herbert comes to All Children’s from Children’s Medical Center Dallas, where she was a hospitalist in the cardiac intensive care unit. She completed a pediatric residency and fellowships in pediatric cardiology and pediatric interventional cardiology at University of Texas Southwestern in Dallas. She is a graduate of the Medical College of Georgia. She is a member of the American College of Cardiology, the American Academy of Pediatrics and the Society for Cardiac Angiography and Interventions.

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Elisa Marcuccio, M.D.

Dr. Marcuccio is a general pediatric cardiologist who provides both inpatient and outpatient cardiology care. Her areas of expertise include cardiology, echocardiography and fetal echocardiography.  She is an assistant profess of cardiology with the Johns Hopkins University School of Medicine and is involved in training resident physicians at Johns Hopkins All Children’s Hospital. Dr. Marcuccio completed her pediatric resident and pediatric cardiology fellowship at Children’s Hospital of Pittsburgh and was an assistant professor of pediatric cardiology with the University of Pittsburgh School of Medicine before joining the Johns Hopkins All Children’s Heart Institute. 

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Daniel A. Mauriello, M.D.

Dr. Mauriello is a pediatric cardiologist who treats children with congenital heart disease and has expertise in fetal, transthoracic and transesophageal echogardiography. After graduating from the University of South Florida College of Medicine, he completed a residency in pediatric and adolescent medicine and a pediatric cardiology fellowship at the Mayo School of Graduate Medical Education, located at the Mayo Clinic in Rochester, Minnesota. His research interests include clinical outcomes and quality improvement measures. 

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Michelle Miller, M.D.

Dr. Miller specializes in pediatric, fetal and adult congenital heart disease, with a particular focus in fetal medicine. She works closely with prenatal practitioners throughout the area to offer safe, well-planned pregnancies and deliveries and educates local pediatric caregivers and community hospitals in caring for children and pregnant women with cardiac issues.

After completing her pediatric cardiology fellowship at UCLA, Miller became the director of fetal cardiology at Cedars-Sinai Medical Center in Los Angeles and an associate professor of medicine in the UCLA Department of Pediatrics. Having relocated to Florida in 2010, Dr. Miller is an associate professor of medicine with the Florida State University Medical School. She has published multiple scholarly articles on pediatric and fetal cardiology. Recently, Dr. Miller began cataloging the cardiac pathology library at Johns Hopkins All Children’s Hospital, a project that will make a significant contribution to education and research. 


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Benton Ng, M.D.

Dr. Ng is a pediatric cardiologist with expertise in noninvasive imaging, including transthoracic echocardiography, transesophageal echocardiography, and cardiac MRI. After completing his medical training at the University of Texas Southwestern in Dallas, he completed his pediatric residency at the University of Wisconsin in Madison, followed by a pediatric cardiology fellowship at the University of Iowa in Iowa City. He received additional training in cardiac MRI at the Children’s Hospital of Philadelphia. Prior to joining Johns Hopkins All Children’s Hospital, he was a clinical assistant professor and director of pediatric noninvasive imaging services at the University of Iowa. Dr. Ng also holds a master’s degree in clinical investigation from the University of Iowa.

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Thieu Nguyen, M.D.

Dr. Nguyen is a pediatric cardiologist and director of the pediatric echocardiography laboratory at the Johns Hopkins All Children’s Heart Institute. He completed a fellowship in pediatric cardiology and a senior fellowship in non-invasive cardiology at Mount Sinai Medical Center in New York City.  Dr. Nguyen completed his pediatric residency at the University of South Florida College of Medicine and Johns Hopkins All Children’s Hospital after graduating from the University of Washington School of Medicine, Seattle.  Dr. Nguyen was an assistant professor at Loma Linda University in California before joining Johns Hopkins All Children’s pediatric cardiology program in 2010. 

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Jeremy Scott Ramey, M.D.

Dr. Ramey is a general pediatric cardiologist who provides inpatient and outpatient care for children with congenital heart disease. He completed a pediatric cardiology fellowship at Columbia University College of Physicians & Surgeons, New York and Morgan Stanley Children’s Hospital at New York Presbyterian, where he also served as chief pediatric cardiology fellow. He received his medical degree from Marshall University in Huntington, West Virginia and completed his pediatric residency at UMDNJ-Robert Wood Johnson University Hospital and Bristol Myers Squibb Children’s Hospital in New Brunswick, New Jersey. 

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Peter J. Sambatakos, M.D.

Dr. Sambatakos is a pediatric cardiologist based in Outpatient Care, Pasco, for the Johns Hopkins All Children’s Heart Institute. Previously, he spent three years as a pediatric cardiology clinical fellow and completed a clinical clerkship at the New York-Presbyterian Morgan Stanley Children’s Hospital/Columbia University Medical Center. He also was assistant course director for the medical student and resident elective, member of the Fellow Peer Mentorship Program and co-chaired the Fellowship Quality Improvement Project.

Dr. Sambatakos completed his residency in general pediatrics at the University of Miami/Jackson Memorial Holtz Hospital. He earned his Doctorate of Medicine and his bachelor of arts in Chemistry and Biomedical Engineering at Tufts University where he graduated cum laude. He is a member of the Cardiovascular Disease in the Young Council, American Heart Association and the American College of Cardiology.
 

Ashish B. Shah, M.D.

Dr. Shah specializes in pediatric cardiology in the Johns Hopkins All Children’s Heart Institute. His areas of focus include noninvasive imaging, general pediatric cardiology and quality improvement. He is Tri-Chair of the Heart Institute Patient Safey & Quality committee.
 
Previously he was a pediatric cardiologist with Phoenix Children’s Heart Center, where he was co-director for the Cardiac High Acuity Monitoring Program for Infants and Newborns (CHAMPION) and site leader for the National Pediatric Cardiology Quality Improvement Collaborative. Dr. Shah worked to develop and implement newborn pulse oximetry screening for critical congenital heart disease in newborns across the state and served on the Arizona Department of Health’s Newborn Screening Committee. He was also the physician volunteer for the Nick and Kelly Heart Camp.

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Gary Stapleton, M.D.

Dr. Stapleton is a pediatric interventional cardiologist and serves as Johns Hopkins All Children’s division chief of pediatric cardiology and medical director of the cardiac catheterization lab at the Johns Hopkins All Children’s Heart Institute. Dr. Stapleton is active in research and education in interventional cardiology and has launched innovative techniques at Johns Hopkins All Children’s to treat congenital heart disease without the need for open heart surgery. He did a pediatric residency with San Antonio Uniformed Services in Texas and was a general pediatrician at Eglin Air Force Base before completing both a pediatric cardiology fellowship and pediatric interventional fellowship at Baylor College of Medicine and Texas Children’s Hospital in Houston.

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Bethany Wisotzkey, M.D.

Dr. Wisotzkey specializes in pediatric cardiology in the Johns Hopkins All Children’s Heart Institute. She joined the hospital staff in 2017.

Dr. Wisotzkey earned her medical degree from University of Texas Health Science Center San Antonio and trained in pediatrics at Duke University Medical Center. She then completed a pediatric cardiology fellowship at Seattle Children’s Hospital and a pediatric heart failure and transplantation fellowship at Cincinnati Children’s Hospital.

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