Dr. David G. Morrison

Dr. Stapleton is the division chief of oncology and director of pediatric neuro-oncology at Johns Hopkins All Children’s Hospital. Dr. Stapleton joined the hospital in 2007. She has formal training in pediatric neuro-oncology. She received the Armstrong Award for Quality and Patient Safety for Johns Hopkins All Children's in the 2024 Johns Hopkins Medicine Clinical Awards. Dr. Stapleton is on the Pediatric Palliative Care Team at Johns Hopkins All Children’s, and she specializes in symptom control and end of life care. She has been awarded numerous grants for phase I studies for patients with brain and spinal cord tumors as well as clinical research in pediatric palliative care. Dr. Stapleton’s research experience includes investigator-initiated and multi-center research projects. Dr. Stapleton is an associate professor of pediatrics at the University of South Florida and an assistant professor in the department of pediatrics at Johns Hopkins University. Dr. Stapleton completed her medical training at St. Louis University School of Medicine, residency training at Lackland Air Force Base in Texas and fellowship training at Baylor College of Medicine/Texas Children’s Hospital. Dr. Stapleton also served 13 years in the United States Air Force. Dr. Stapleton is a member of the American Board of Pediatrics, the Children’s Oncology Group, the Society of Neuro-Oncology, American Society of Pediatric Hematology/Oncology, and America Academy of Hospice and Palliative Medicine. Dr. Stapleton is rated as an Advanced provider by MediFind in the treatment of Neurofibromatosis. Her top areas of expertise are Medulloblastoma, Embryonal Tumor with Multilayered Rosettes, Glioma, Histiocytosis, and Bone Marrow Aspiration.

Himali Jayakody is a Pediatric Neurologist and a Pediatrics provider in Oldsmar, Florida. Dr. Jayakody is rated as an Advanced provider by MediFind in the treatment of Neurofibromatosis. Her top areas of expertise are Congenital Muscular Dystrophy Type 1A, Landau-Kleffner Syndrome, Seizures, and Autism Spectrum Disorder. Dr. Jayakody is currently accepting new patients.

Dr. Crenshaw is the medical director for the Clinical Genetics Program at Johns Hopkins All Children’s Hospital and also serves as an assistant professor with Johns Hopkins Medicine. Her research interests include congenital heart defects, chromosome abnormalities and Turner Syndrome. She has additional expertise in the genetics of congenital heart disease and connective tissue disorders. After graduating from Cornell University as a Cornell National Scholar and Hughes Research Scholar, Dr. Crenshaw received her medical degree from the State University of New York Health Sciences Center at Syracuse. She completed a pediatrics residency at Inova Fairfax Hospital for Children in Falls Church, VA (a teaching affiliate of the University of Virginia), followed by a three-year medical genetics training program at Johns Hopkins University’s McKusick-Nathans Institute of Genetic Medicine in Baltimore, MD. Dr. Crenshaw is rated as an Advanced provider by MediFind in the treatment of Neurofibromatosis. Her top areas of expertise are Turner Syndrome, Intersex, Mosaicism, and Cleft Lip and Palate.