Neuropsychology Team

Sakina Butt, Psy.D. Psychiatry / Psychology

Dr. Butt is a neuropsychologist at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2019. Some of Dr. Butt’s areas of clinical expertise include neuropsychological evaluations and consultations for children in the neonatal intensive care unit and pediatric intensive care unit.
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Jennifer Katzenstein, Ph.D. Psychiatry / Psychology

Dr. Katzenstein is the director of psychology and neuropsychology 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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Danielle Ransom, Psy.D. Psychiatry / Psychology

Dr. Ransom specializes in neuropsychology at Johns Hopkins All Children’s Hospital. She joined the medical staff in 2019. Before joining Johns Hopkins All Children’s, Dr. Ransom was an assistant professor at the University of Miami Miller School of Medicine where she co-directed the Pediatric Concussion Clinic and developed the neuropsychology arm of the Sports Concussion Clinic.
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Colleen Hess, PhD

Colleen Hess, PhD

Neuropsychology Fellow 2019-2021


Megan Sy, PsyD

Neuropsychology Post-Doctoral Resident 2018-2020