Pediatric Stroke Program Team at Johns Hopkins All Children's


Maha Al-Ghafry, M.D.

Dr. Al-Ghafry is an assistant professor of Pediatrics at the Johns Hopkins University School of Medicine, practicing pediatric hematology at the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She joined the hospital staff in 2023. Dr. Al-Ghafry specializes in hemostasis, thrombosis and transfusion medicine in pediatric patients. Her research focuses on laboratory measures of bleeding and thrombotic risk in special pediatric populations. She is the author of multiple peer reviewed publications. She was previously a consultant physician in the Division of Pediatric Hematology and Oncology at Royal Hospital in Oman.

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Maha Al-Ghafry MD

Marisol Betensky, M.D.

Dr. Betensky is an assistant professor of Pediatrics in the Division of Hematology at Johns Hopkins University School of Medicine and a pediatric hematologist in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She also serves as medical director of the hospital’s International Patient Services program. Dr. Betensky specializes in pediatric thrombosis and is a member of the hospital's thrombosis program, providing care for patients with complex thrombotic disorders.

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Marisol Betensky, M.D.

Neil A. Goldenberg, M.D. Ph.D

Dr. Goldenberg is the associate dean for clinical and translational research and director of the Johns Hopkins All Children's Institute for Clinical and Translational Research. He is the Perry Family Endowed Professor in Clinical and Translational Research and a professor of pediatrics and medicine at the Johns Hopkins University School of Medicine. Dr. Goldenberg also serves as chief research officer for All Children’s Research Institute. He directs the Thrombosis Program in the Johns Hopkins All Children’s Cancer and Blood Disorders Institute and the Stroke Program in the Johns Hopkins All Children’s Institute for Brain Protection Sciences. Dr. Goldenberg is an international leader in the field of venous thromboembolism in children and young adults.

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Neil A Goldenberg


Thomas Geller, M.D.

Dr. Geller specializes in pediatric neurology for the Johns Hopkins All Children’s Institute for Brain Protection Sciences. He sees patients at the main campus in St. Petersburg and at Johns Hopkins All Children’s Outpatient Care, North Port. He joined the hospital staff in 2018. Dr. Geller previously was a pediatric neurologist and child neurology residency program director at Cardinal Glennon Children's Medical Center in St. Louis, Missouri. He retired as a captain from the U.S. Navy Medical Corps. His clinical and research interests include neurofibromatosis, neuro-oncology and pain management.

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Thomas Geller


Jennifer Katzenstein, Ph.D

Dr. Katzenstein is the director of psychology, neuropsychology and social work, at Johns Hopkins All Children’s Hospital. Previously, Dr. Katzenstein was a private practitioner and Assistant Professor of Neurology at Indiana University School of Medicine/Riley Hospital for Children in Indianapolis where she provided neuropsychological evaluations, consultations and academic coaching for children and adolescents. After graduating from Indiana University Purdue University Indianapolis, she completed a pediatric internship and fellowship at Texas Children's Hospital/Baylor College of Medicine. Dr. Katzenstein is board certified in pediatric neuropsychology and clinical neuropsychology.

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Jennifer Katzenstein


Javier Quintana, M.D.

Dr. Quintana is a radiologist at Johns Hopkins All Children’s Hospital. He joined hospital staff in 2010. Dr. Quintana earned his medical degree at the University of South Florida. He trained in general pediatrics at Jackson Memorial Hospital/University of Miami and completed a diagnostic radiology residency at Geisinger Medical Center in Danville, Pennsylvania. Dr. Quintana completed a pediatric radiology fellowship at Children’s Hospital of Philadelphia. He is fluent in Spanish.

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Javier Quintana

Care Coordinator

Katie Mills, A.P.R.N.


Katie Mills