Meet the Team

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Meet Our Neuroscience Team

Our Neuroscience Institute is home to board-certified pediatric neurosurgeons, neurologists and neuroimaging specialists. Our physicians work with a multi-disciplinary team of nurses, therapists, social workers and child life specialists to care to children with all types of neurological conditions. Our experienced and professional team of neurologists and neurosurgeons is recognized as one of the nation's best according to U.S. News and World Report.

Neuroscience Institute Leadership

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Paul Klimo, MD, is Chief of the Division of Pediatric Neurosurgery at The University of Tennessee Health Science Center and is certified by the American Board of Pediatric Neurosurgery. Dr. Klimo specializes in brain tumors, spinal surgery, epilepsy surgery, vascular neurosurgery and endoscopy.

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James Wheless, MD, is co-director of the Neuroscience Institute and professor and chief of Pediatric Neurology at The University of Tennessee Health Science Center. He also serves as director of the Neuroscience Institute's Comprehensive Epilepsy Program. He is certified by the American Board of Psychiatry and Neurology and specializes in epilepsy, Tuberous Sclerosis Complex and Dravet Syndrome. He serves on the boards of Citizens United for Research in Epilepsy (CURE), International Epilepsy Consortium National Tuberous Sclerosis Association, The Charlie Foundation to Help Cure Pediatric Epilepsy and Epilepsy.com.

Neuroscience Institute Senior Director

Neurology

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Elena Caron, MD, is certified by the American Board of Pediatrics and specializes in genetic and acquired neuromuscular disorders.

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Paola Castri, MD, PhD, is a pediatric neurologist and an assistant professor at the University of Tennessee Health Science Center. She is a member of the Child Neurology Society, American Academy of Neurology and the Newborn Brain Society.

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Beth Anne Cavanaugh, MD, is a pediatric neurologist and director of Le Bonheur's Pediatric Stroke Program. She is a member of the International Pediatric Stroke Organization, Child Neurology Society and American Academy of Neurology.

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Nitish Chourasia, MD, is a pediatric neurologist and epileptologist. His specialties include pediatric epilepsy and clinical neurophysiology with expertise in epilepsy surgery evaluation and management of medically refractory epilepsies including genetic epilepsies.

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Ankita Ghosh, MD, is a pediatric neurologist and director of the Comprehensive Headache Center at Le Bonheur. She is an assistant professor at the University of Tennessee Health Science Center. Ghosh is a member of multiple professional organizations including the Child Neurology Society, American Headache Society and International Headache Society.

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Daniel Guillen, MD, is a pediatric neurologist in Le Bonheur's Neuromuscular Clinic. He is a member of the American Academy of Neurology and the Child Neurology Society.

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Robin Jack, MD, is a pediatric neurologist and associate professor at the University of Tennessee Health Science Center and Le Bonheur Children's Hospital Neuroscience Institute. She is certified by the American Board of Psychiatry and Neurology with Special Qualification in Child Neurology. She is co-director of the Le Bonheur Neuroscience Institute Movement Disorders and Tourette Syndrome Center of Excellence as designated by the Tourette Association of America (TAA). Her clinical practice focuses on the care of children and adolescents with Tourette syndrome and other movement disorders.

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Amy McGregor, MD, is certified by the American Board of Psychiatry and Neurology and specializes in general pediatric neurology and epilepsy.

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Basan Mudigoudar, MD, is certified by the American Board of Psychiatry and Neurology and specializes in general pediatric neurology and epilepsy.

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Amy Patterson, MD, is a pediatric neurologist and director of the Infantile Epilepsy Center. Her clinical areas of special interest include epilepsy, epilepsy in infancy including infantile spasms and tuberous sclerosis complex.

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Ashmitha Raja, MD, is a pediatric neurologist and assistant professor at the University of Tennessee Health Science Center. She is certified by the American Board of Psychiatry and Neurology with Special Qualification in Child Neurology. Her clinical practice focuses on the care of children and adolescents with movement disorders.

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Mari Rivas-Coppola, MD, specializes in treating children with epilepsy. She also works as a general neurologist and sees patients who suffer from various neurological disorders, including headaches, multiple sclerosis, developmental delays and tuberous sclerosis.

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Jenny Schmidt, MD, is a pediatric neurologist. She is an assistant professor at the University of Tennessee Health Science Center. Schmidt is a member of the American Academy of Neurology and the Child Neurology Society.

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Andrew Schroeder, MD, is a pediatric neurologist. He is a member of the American Academy of Neurology and the Child Neurology Society.

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Namrata Shah, MD, is certified by the American Board of Psychiatry and Neurology and specializes in general pediatric neurology, neuromuscular disorders, multiple sclerosis and demyelinating disorders.

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Erick Viorritto, MD, MPH, is an assistant professor of Pediatric Neurology at the University of Tennessee Health Science Center and specializes in pediatric neurology and sleep medicine.

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Sarah Weatherspoon, MD, is a pediatric neurologist. Her clinical areas of special interest include epilepsy in infants and epilepsy surgery.

Neurosurgery

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Stephanie Einhaus, MD, is certified by the American Board of Pediatric Neurosurgery and specializes in epilepsy surgery, cranial endoscopy and craniosynostosis.

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Michael Muhlbauer, MD, is associate professor at The University of Tennessee Health Science Center and is certified by the American Board of Pediatric Neurosurgery. Dr. Muhlbauer specializes in general pediatric neurosurgery, pediatric spine and spine tumors, GAMMA knife in pediatrics and neurosurgical trauma.

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Nir Shimony, MD, is a pediatric neurosurgeon with Le Bonheur's Neuroscience Institute. Shimony is a member of the American Association of Neurological Surgeons, Congress of Neurological Surgeons, Society of Neuro-Oncology and American Epilepsy Society. His clinical and research areas of expertise include epilepsy surgery, tumors and lesions of the brain, brainstem and spinal cord, intraoperative neurophysiological monitoring for advanced epilepsy and tumor resection, use of minimally invasive techniques such as advanced endoscopy and keyhole surgeries for brain lesions and intractable epilepsy.

Neurointerventional Radiology

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Dr. Lucas Elijovich received his undergraduate degree in Biology from Tufts University in Massachusetts and his medical degree from the University of Texas in Galveston. He then completed his Neurology residency at New York University where he served as Chief Resident. In order to pursue advanced interests in cerebrovascular disease, neurocritical care, and interventional neuroradiology, Dr. Elijovich went on to complete fellowship training in stroke and neurocritical care at the University of California San Francisco. He then returned to New York to train with Dr. Alejandro Berenstein, one of the pioneers of interventional neuroradiology. Dr. Elijovich joined Semmes-Murphey Clinic in 2010 and is an Associate Professor in the Departments of Neurology and Neurosurgery at the University of Tennessee Health Sciences Center. Dr. Elijovich also serves as the Director of Neurocritical and Neurointerventional Surgery for Le Bonheur Children’s Hospital in the Neurosciences Institute and as the Director of the Le Bonheur Vascular Anomalies Center.

Neuroradiology

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Asim F. Choudhri, MD, is a radiologist and assistant professor at The University of Tennessee Health Science Center in the Department of Radiology where he is also an assistant chair of research affairs. He is certified by the American Board of Radiology with a subspecialty in neuroradiology and a certificate in diagnostic radiology. His specialties include neuroradiology, spine imaging, functional neuroradiology, head and neck imaging and non-invasive neurovascular imaging.

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Jorge A. Lee Diaz, MD, is a pediatric neuroradiologist and associate professor at the University of Tennessee Health Science Center.

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Vijay Pande, MD, is a radiologist and assistant professor at the University of Tennessee Health Science Center.

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Muhammad Mubashir Ramzan, MD, is a radiologist and assistant professor at the University of Tennessee Health Science Center.

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Adeel Siddiqui, MBBS, is a board-certified radiologist and specializes in pediatric neuroradiology.

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Steven Sogge, MD, is a pediatric neuroradiologist. Sogge is a member of the American College of Radiology Leadership Institute, American Society of Neuroradiology and the Radiological Society of North America.

Clinical Neuropsychology

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Gwen Beard, PsyD, is a clinical psychologist. She is assistant professor of pediatrics at the University of Tennessee Health Science Center.

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Christen Holder, PhD, is the clinical director of Pediatric Neuropsychology and specializes in epilepsy, congenital heart disease and high-risk newborn populations. She serves as co-director of the Movement Disorders and Tourette Syndrome Center.

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Sarah Watts, PsyD, is a pediatric neuropsychologist and an Assistant Professor at the University of Tennessee Health Science Center. She is a member of the National Academy of Neuropsychology.

Psychiatry

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Tracee Ridley-Pryor, DNP, APRN, PMHNP-BC, is a psychiatric mental health nurse practitioner at Le Bonheur. She is director of Pediatric Neurology Research for the University of Tennessee Health Science Center.

Neurosciences

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Shalini Narayana, MBBS, PhD, is a professor at the University of Tennessee Health Science Center and director of the Transcranial Magnetic Stimulation (TMS) Laboratory and Functional Neuroimaging Research Program at Le Bonheur Children’s Hospital Neuroscience Institute. She is an expert in the application of TMS and other non-invasive imaging in children with interests in changes in motor and cognitive neural systems.

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Roozbeh Rezaie, PhD, is an expert in functional neuroimaging with interests in the application of EEG and MEG to the surgical management of epilepsy and the organization of brain function in neurodevelopmental disorders.

Neuro-ophthalmology

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Lauren Ditta, MD, specializes in pediatric neuro-ophthalmology. She treats children with a wide range of abnormal eye movements including complex strabismus, nystagmus, cranial nerve palsies affecting eye movement and congenital cranial dysinnervation syndromes.

Nurse Practitioners

Epilepsy Coordinator

Karen Butler
Karen Butler, RN, BSN

Lana Bradford
Lana Bradford, RN