Johns Hopkins All Children's Hospital Heart Institute

Meet Our Team

Our team provides comprehensive pediatric and perinatal cardiology care for patients with congenital heart defects and other cardiac problems.

Heart Institute Leadership

Administration

Lisa Moore, M.S.N., M.H.A, R.N.Senior Director, Nursing

Moore, who joined the team in 1990, has more than 28 years of nursing and administrative experience. She earned her Bachelor of Nursing degree at the University of Florida and a Master of Science in Nursing and Health Administration from the University of Phoenix. She has many years of pediatric cardiac critical care nursing experience and has served in numerous roles at Johns Hopkins All Children’s Hospital, including administrative director of the Heart Center, director of Pediatric Medicine, clinical manager of the cardiovascular intensive care unit (CVICU), and extracorporeal membrane oxygenation (ECMO) coordinator. Moore has presented at multiple national and international symposia and holds an American Nurses Credentialing Center (ANCC) Board Certification for advanced nurse executives.

Alfred Asante-Korang, M.D. Cardiology - Pediatric

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 Crawford, M.D. Cardiology - Pediatric

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 Decker, M.D. Cardiology - Pediatric

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. Cardiology - Pediatric

Dr. Freire specializes in pediatric cardiology in the Johns Hopkins All Children’s Heart Institute, evaluating and treating patients with congenital heart disease starting in the womb. She also leads the hospital’s pediatric pulmonary hypertension program, managing patients with pulmonary hypertension from different causes. She is an assistant professor of pediatrics in the Johns Hopkins University School of Medicine.
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Daniel Mauriello, M.D. Cardiology - Pediatric

Dr. Mauriello is a pediatric cardiologist who treats children with congenital heart disease and has expertise in fetal, transthoracic and transesophageal echocardiography. 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. Cardiology - Pediatric

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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Joelle Miller, M.D. Cardiology - Pediatric

Dr. Miller is a pediatric cardiologist for Johns Hopkins All Children’s Hospital. She sees patients at outpatient care centers in North Port and Fort Myers. Dr. Miller earned her medical degree at the University of Florida and completed her pediatric internship at Shands Teaching Hospital in Gainesville. She completed a pediatrics residency at the University of Miami at Jackson Memorial Hospital, serving as co-chief resident. She also completed a pediatric cardiology fellowship at the University of Miami and Jackson Memorial Hospital.
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Benton Ng, M.D. Cardiology - Pediatric

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. Cardiology - Pediatric

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 Ramey, M.D. Cardiology - Pediatric

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 Sambatakos, M.D. Cardiology - Pediatric

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.
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Ashish Shah, MD, MBA Cardiology - Pediatric

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 Safety & 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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Bethany Wisotzkey, M.D. Cardiology - Pediatric

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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Plato Alexander, M.D. Critical Care Medicine

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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Farhan Malik, D.O. Critical Care Medicine

Dr. Malik specializes in cardiac critical care in the Johns Hopkins All Children's Heart Institute. He joined the hospital staff in 2015. Dr. Malik earned his medical degree at New York College of Osteopathic Medicine and completed his pediatric residency at Newark Beth Israel Medical Center/Children’s Hospital of New Jersey. He completed a pediatric critical care fellowship at the University of Texas Medical School.
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Jason Parker, D.O. Critical Care Medicine

Dr. Parker is interim associate director of the cardiovascular intensive care unit in the Johns Hopkins All Children's Heart Institute. He joined the hospital staff in 2016. Dr. Parker earned his medical degree at the University of Medicine and Dentistry of New Jersey School of Osteopathic Medicine. He completed an osteopathic pediatric-focused internship at Kennedy Health System in Stratford, New Jersey, and then a pediatric residency at Thomas Jefferson University/AI duPont Hospital for Children. He completed a fellowship in pediatric critical care at Cohen Children’s Medical Center of New York and a fellowship in pediatric cardiac intensive care at The Heart Institute at Children’s Hospital of Denver.
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Michelle Smith, M.D. Critical Care Medicine

Dr. Smith specializes in critical care medicine in the cardiovascular intensive care unit (CVICU) and pediatric intensive care unit (PICU) at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2015. She earned her medical degree at Georgetown University School of Medicine and completed her pediatric residency at Children’s Hospital, Los Angeles. She completed her pediatric critical care fellowship at The Johns Hopkins University.
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