Johns Hopkins All Children's Hospital

Meet Our Pediatric Stroke Program Team


Marisol Betensky, MD Hematology / Oncology

Dr. Betensky is a pediatric hematologist who specializes in hemostasis and thrombosis in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute and serves as medical director of the hospital's International Patient Services program. She also treats bone marrow failure syndromes and congenital and acquired neutropenias, which are immune system conditions that may result in infections. Dr. Betensky, a native of Mexico, has worked to provide medical education and build capacity of hematology programs in Africa and Latin America and helped develop research projects in Latin America.
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Neil A. Goldenberg, MD PhD Hematology / Oncology

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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Thomas Geller, MD Neurology

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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Jennifer Katzenstein, PhD Psychiatry / Psychology

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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Javier Quintana, MD Radiology

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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Care Coordinator

Katie Mills, A.P.R.N.

Katie Mills, A.P.R.N. Care Coordinator, Stroke Program