Dr. Michael V. Ortiz

Dr. Cohen is Director of Pediatric Neuro-Oncology and Clinical Director of the Division of Pediatric Oncology at the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins. He received his undergraduate degree at Brown University and earned his MD at the Upstate Medical University, in Syracuse, NY. He did his general Pediatric Residency and Chief Residency at the University of Colorado and completed his Pediatric Hematology/Oncology Fellowship at Johns Hopkins. He has served on the faculty since 1994. His research centers on clinical trials of novel therapeutics for children with brain tumors. Dr. Cohen is co-chair of the High-Grade Glioma committee for the Children's Oncology Group and in that capacity has a particular research interest in the development of therapeutics for the treatment of infiltrating gliomas. He serves on the scientific advisory board for a number of organizations including St. Baldricks and the Childhood Brain Tumor Foundation. He is on the editorial board for PDQ with responsibility for authorship of the pediatric CNS brain tumor summaries. The Pediatric Neuro-Oncology program conducts a broad range of research centered primarily around the development and testing of novel therapeutics for children with brain tumors. The multidisciplinary nature of this work translates into continual collaboration with specialists in pediatric neurosurgery, radiation oncology, neuropathology, neuroradiology, neurology, neuro-ophthalmology, neuropsychology, and other related disciplines. Dr. Cohen is rated as a Distinguished provider by MediFind in the treatment of Hepatoblastoma. His top areas of expertise are Glioma, Brain Stem Cancer, Medulloblastoma, Embryonal Tumor with Multilayered Rosettes, and Bone Marrow Aspiration.

Megan Askew is a Hematologist and an Oncologist in Baltimore, Maryland. Dr. Askew is rated as an Advanced provider by MediFind in the treatment of Hepatoblastoma. Her top areas of expertise are Hemolytic Crisis, Sickle Cell Disease, Alpha Thalassemia X-Linked Intellectual Disability Syndrome, and Alpha Thalassemia. Dr. Askew is currently accepting new patients.

Sonja Rasmussen, MD, MS is Professor in the Department of Genetic Medicine at Johns Hopkins School of Medicine. She joined Johns Hopkins after 4 years at the University of Florida (UF) College of Medicine and College of Public Health and Health Professions where she served as a Professor in the Departments of Pediatrics, Epidemiology, and Obstetrics and Gynecology and as the Director of UF’s Precision Health Program. Before joining University of Florida in 2018, she served for 20 years at the Centers for Disease Control and Prevention (CDC) in Atlanta, where she held several scientific leadership roles. She served in leadership roles during several CDC responses to public health emergencies, including 2009 H1N1 influenza, H7N9 influenza, Middle East Respiratory Syndrome (MERS), and Zika virus. Dr. Rasmussen is an author on >300 peer-reviewed publications and is the lead editor of The CDC Field Epidemiology Manual, released by Oxford University Press in 2019. Her research interests focus on understanding the effects of infections and medications during pregnancy, genetic and environmental risk factors for birth defects, and morbidity and mortality associated with genetic conditions. Dr. Rasmussen is rated as an Advanced provider by MediFind in the treatment of Hepatoblastoma. Her top areas of expertise are Microcephaly, Achalasia Microcephaly Syndrome, Gastroschisis, and Cortical Dysplasia.