Dr. Hilary Vernon is a Professor of Genetic Medicine and pediatrics at the Johns Hopkins University School of Medicine. She is also an attending physician at Kennedy Krieger Institute. Hilary Vernon has expertise in treating inborn errors of metabolism and mitochondrial disorders. She is the director of the Mitochondrial Care Center at The Johns Hopkins Hospital and the Barth Syndrome Interdisciplinary Clinic at the Kennedy Krieger Institute. Her research interests include understanding intermediary metabolism in Barth syndrome and in disorders of branch chain amino acid metabolism. Dr. Vernon also co-directs the Department of Genetic Medicine Clinical Trials Unit, and is the principal investigator on multiple clinical trials for rare diseases. Dr. Vernon received her medical degree and doctorate from Rutgers University, New Brunswick, New Jersey. She completed residencies in genetics and pediatrics at The Johns Hopkins University, and a fellowship in clinical laboratory biochemical genetics at The Johns Hopkins University. Dr. Vernon was recognized with the 2010 Francis F. Schwentker Award for Excellence in Research at Johns Hopkins University and the 2011 James B. Sidbury Jr. Fellowship in Biochemical Genetics at Johns Hopkins University. Dr. Vernon is rated as an Advanced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are Methylmalonic Acidemia, Propionic Acidemia, Infantile Neutropenia, Progressive External Ophthalmoplegia, and Gastrostomy.

Dr. Ada Hamosh is the Dr. Frank V. Sutland Professor of Pediatric Genetics in the Departments of Genetic Medicine and Pediatrics. Since 2002, she has served as clinical director of the McKusick-Nathans Institute of Genetic Medicine, now Department of Genetic Medicine and scientific director of the Online Mendelian Inheritance in Man® (OMIM), a catalog of more than 16,800 human genes and genetic disorders created by Dr. Victor A. McKusick. Her research centers the molecular basis of Mendelian disorders, the integration of genetics into clinical practice and the diagnosis and management of inborn errors of metabolism. Dr. Hamosh earned a bachelor’s degree in biology from Wesleyan University, a medical degree from Georgetown University School of Medicine and a master’s of public health from Johns Hopkins University School of Public Health. She later completed a fellowship in medical and biochemical genetics from the Johns Hopkins School of Medicine, before joining the Johns Hopkins faculty in 1992. Dr. Hamosh began her genetics career focusing on cystic fibrosis, serving as coordinator of the International Cystic Fibrosis Genotype-Phenotype Consortium. She served as chair of the Maryland State Advisory Council for Hereditary & Congenital Disorders from 2001-2009, during which time she also served on the executive committee of the Genetic Counseling Training Program, run by Johns Hopkins University and the National Human Genome Research Institute. Dr. Hamosh has authored more than 128 publications on a variety of topics. In addition, she is a member of 16 professional associations and advisory committees including the American Society of Human Genetics, the Steering Committee of the Global Alliance for Genomics and Health, and the executive board of the Human Genome Organization, of which she will be President from 2023-2025. Dr. Hamosh was recognized in Baltimore magazine as one of the region’s top doctors in 2013, and 2016-2020. Dr. Hamosh is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are Methylmalonic Acidemia, Maple Syrup Urine Disease, Ornithine Transcarbamylase Deficiency, Phenylketonuria (PKU), and Deep Brain Stimulation.

Arens Taga is a neurologist specializing in neuromuscular diseases, with a particular focus on amyotrophic lateral sclerosis (ALS) and other motor neuron diseases. His clinical work aims to improve the quality of care for patients with ALS through biomarker-based, precision medicine approaches that refine disease stratification and facilitate more targeted and efficient enrollment in clinical trials. As a clinician-scientist, Dr. Taga uses patient-derived induced pluripotent stem cells to model ALS, uncover novel disease mechanisms and identify therapeutic targets that are translatable to clinical trials. In recognition of his work in ALS, Dr. Taga was awarded the 2025 Richard Olney Clinician Scientist Development Award, which honors early-career physician-scientists dedicated to advancing ALS research. Dr. Taga earned his medical degree from the School of Medicine and Surgery at the University of Parma, Italy, where he also completed his neurology residency. He subsequently trained at The Johns Hopkins University, completing a postdoctoral research fellowship in the neuromuscular division, an internal medicine internship, a neurology residency and a neuromuscular clinical fellowship. Dr. Taga is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. His top areas of expertise are 15q11.2 Microdeletion, Primary Lateral Sclerosis, Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease), and Cluster Headache.

Dr. Sarah Kelley focuses on treating children with epilepsy with an emphasis on those who continue to have seizures after trying multiple medications. Dr. Kelley is the director of the Pediatric Epilepsy Monitoring Unit where she oversees the evaluation and management of children with difficult to control or difficult to diagnose epilepsy. She evaluates and manages patients who may be candidates for epilepsy surgery. Dr. Kelley has additional expertise in the treatment of children with electrical status epilepticus of sleep (ESES). Dr. Kelley is also very involved with teaching and education and in addition to attending in the Epilepsy Monitoring Unit is one of the Attending Physicians on the Pediatric Neurology Inpatient Service. Dr. Kelley received her medical degree from SUNY at Buffalo Medical School in New York. She then went on to complete her pediatrics residency training followed by her Child Neurology training at The Johns Hopkins Hospital in Baltimore. She then completed her fellowship in clinical neurophysiology/pediatric epilepsy at Johns Hopkins. Dr. Kelley sees patients with seizures/epilepsy on Tuesday afternoons and Wednesday and Thursday mornings in the Johns Hopkins Outpatient Center. Telemedicine visits with Dr. Kelley are available in some circumstances. Dr. Kelley is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are West Syndrome, Status Epilepticus, Seizures, Epilepsy, and Endovascular Embolization.

Dr. Justin McArthur is nationally and internationally recognized for his work in studying the natural history, development and treatment of the neurological complications of HIV/AIDS, multiple sclerosis and other neurological infections and immune-mediated neurological disorders. Dr. McArthur has also developed a technique to use cutaneous nerves to study sensory neuropathies, including those associated with chemotherapy, HIV and diabetes. Currently his clinical practice includes neuroimmunological disorders including MS, neurological infections, and complex undiagnosed neurological disorders. Dr. McArthur was the founding director of the Johns Hopkins/National Institute of Mental Health Research Center for HIV-associated Cognitive Disorders. The Center is an experienced interdisciplinary research team who have pooled their talents to study the nature of HIV-associated cognitive disorders. he is also the founding director of the Johns Hopkins Sheikh Khalifa Stroke institute. Dr. McArthur received his medical degree from Guys Hospital Medical School in London, UK. He then completed an internship and residency in internal medicine at The Johns Hopkins Hospital in Baltimore, MD. Dr. McArthur stayed with Johns Hopkins to complete a residency in neurology and achieve his Master's in public health. He is the current Director of the Johns Hopkins Department of Neurology and holds the John W. Griffin Professorship in neurology which was established in 2015 by Jeffrey and Harriet Legum. In April 2017 Dr. McArthur was elected to the Association of American Physicians. In 2020 he was inducted into the National Academy of Medicine. Dr. Mcarthur is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. His top areas of expertise are Progressive Multifocal Leukoencephalopathy, Multiple Sclerosis (MS), Relapsing Multiple Sclerosis (RMS), and Encephalitis.

Sofia Saenz-Ayala is a Medical Genetics specialist and a Pediatrics provider in Baltimore, Maryland. Dr. Saenz-Ayala is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are Musculocontractural Ehlers-Danlos Syndrome (mcEDS), Ehlers-Danlos Syndrome (EDS), Carnitine Palmitoyltransferase 1 Deficiency, and Carnitine Palmitoyltransferase 2 Deficiency. Dr. Saenz-Ayala is currently accepting new patients.

Carol Greene is a Pediatrics provider in Baltimore, Maryland. Dr. Greene is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are Musculocontractural Ehlers-Danlos Syndrome (mcEDS), Phenylketonuria (PKU), Increased Head Circumference, and MELAS Syndrome.

Irini Batsis is a Pediatrics provider in Baltimore, Maryland. Dr. Batsis is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. Her top areas of expertise are Biliary Atresia, Wilson Disease, Menkes Disease, Jaundice, and Gastrostomy.

Dr. Tao Wang is an associate professor of pediatrics at the Johns Hopkins University School of Medicine. His areas of clinical expertise include global developmental delays and intellectual disability neurobehavioral disorders in children, and genetic and genomic syndromes and inborn errors of metabolism. Dr. Wang earned his M.D. from Zhongshan Medical University in China and a Ph.D. in human genetics from Johns Hopkins University. He completed his residency in pediatrics at Tufts -New England Medical Center Hospitals and performed fellowships in clinical genetics at Johns Hopkins University School of Medicine and clinical biochemical genetics at Kennedy Krieger Institute. His research interests include x-linked intellectual disabilities (XLID), autism spectrum disorders (ASDs) and inborn errors of metabolism of the central nervous system. Dr. Wang is the associate director of the Medical Genetics Residency and Fellowship Program and a preceptor in the Predoctoral Training Program in Human Genetics. Dr. Wang is rated as an Experienced provider by MediFind in the treatment of Beta-Ketothiolase Deficiency. His top areas of expertise are Isovaleric Acidemia, Hypoplasia of the Tibia with Polydactyly, Polydactyly, and Beta-Ketothiolase Deficiency.