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| | | | | | | Alessandro Olivi, M.D., Chair
Director, Neurosurgical Oncology
Professor of Neurosurgery Education: M.D., fellowship in neurosurgery - University of Padova Medical School; internship in general surgery - Good Samaritan Hospital; residency program in neurosurgery - Mayfield Neurological Institute; fellow in neurological surgery and neuro-oncology - The Johns Hopkins University School of Medicine Specialties/Interests: primary and metastatic tumors of the brain and spinal cord; microsurgery on skull-based tumors, such as acoustic neuromas, meningiomas and vascular lesions; cerebrovascular conditions and craniofacial re-constructions; immunotherapy for brain tumors, cancer stem cells and new drug delivery systems | 
| | | | Judy Huang, M.D., Vice Chair
Director, Cerebrovascular Neurosurgery
Assistant Professor of Neurosurgery Education: B.S. in neuroscience - Brown University; M.D. - Columbia University College of Physicians and Surgeons; residency training in neurological surgery, fellowship in neurovascular research - Neurological Institute of Columbia University Specialties/Interests: cerebrovascular disorders such as cerebral aneurysms, carotid artery stenosis and arteriovenous malformations (AVMs); spinal disorders and primary and metastatic brain tumors; inflammatory mechanisms of stroke | 
| | | | Ali Bydon, M.D.
Clinical Director, Neurosurgical Spine Program
Assistant Professor of Neurosurgery Education: M.D. - University of Michigan School of Medicine; residency in neurosurgery - Henry Ford Hospital; fellowship in complex spinal and reconstructive surgery - The Johns Hopkins Hospital Specialties/Interests: degenerative, neoplastic, infectious
and traumatic disorders of the spine; restoration and reconstruction the spine; minimally-invasive spinal surgery | 
| | | | John Chi, M.D.
Instructor of Neurosurgery Education: M.D., MPH - Columbia University; neurosurgery training program - University of California San Francisco Specialties/Interests: spinal disorders, complex spinal reconstruction, minimally-invasive spinal surgery, adult degenerative spinal disease, herniated discs, spinal deformity, spinal trauma, spinal tumors, upper cervical spine surgery, thoracic spine surgery | 
| | | | Patrick C. Hsieh, M.D.
Instructor of Neurosurgery Education: Specialties/Interests: complex spine surgery, including spinal deformity, spinal tumors and spinal trauma; minimally-invasive spine surgeries for degenerative spine disease, including percutaneous fusion, artificial disc replacement and dynamic stabilization; neuro-oncology including, spinal cord tumors and brain tumors | 
| | | | Alfredo Quinones-Hinojosa, M.D.
Director, Brain Tumor Program at Johns Hopkins Bayview
Assistant Professor of Neurosurgery and Oncology Education: M.D. - Harvard Medical School; residency in neurosurgery, postdoctoral fellowship in developmental and stem cell biology - University of California, San Francisco Specialties/Interests: primary and metastatic brain tumors, with emphasis on motor and speech mapping during surgery; intradural spinal tumors, brainstem and eloquent brain tumors in adults; pituitary tumors; skull base tumors; the role of stem cells in the origin of brain tumors and their role in fighting brain cancer and regaining neurological function | 
| | | | Timothy Witham, M.D., F.A.C.S.
Director, Neurosurgical Spine Program at Hopkins Bayview
Assistant Professor in Neurosurgery Education: B.S. - Pennsylvania State University; M.D. - The Johns Hopkins University School of Medicine; internship in general surgery, residency in neurological surgery - University of Pittsburgh; military committment-chief of neurosurgery element - Keesler Air Force Base in Biloxi, Mississippi Specialties/Interests: surgical treatment of low back pain, spinal oncology with complex spinal reconstruction, dynamic stabilization of the spine, pathology of the occipital-spinal junction, spinal trauma, experimental treatment of metastatic spine tumors | 
| | | | Jean-Paul Wolinsky, M.D.
Clinical Director, Johns Hopkins Spine Program
Assistant Professor of Neurosurgery Education: M.D., general neurosurgery training program - Baylor College of Medicine; extensive training and experience in trauma - Ben Taub Hospital; specialized training in neurosurgical oncology, residency in neurology - M.D. Anderson Cancer Hospital; AO Spine fellowship in complex reconstructive spine surgery and spinal oncology - The Johns Hopkins University School of Medicine Specialties/Interests: neurosurgical oncology, spinal cord tumors, pathology of the occupital-cervical junction; complex spinal reconstruction; skull-base approaches to the upper cervical spine and foramen magnum; minimally-invasive spine surgery | 
| | | |  | | | | Jared Abay, MPA-C, PA-C Biography: Jared Abay, MPA-C, PA-C, is a senior physician assistant in the department of neurosurgery at the Johns Hopkins Bayview Medical Center. He earned an under-graduate degree at George Washington University and a master's at the University of Nebraska. Abay also completed a physician assistant surgical residency program at Sinai Hospital. | 
| | | | Carla Chance, PA-C, MS Biography: Carla Chance, PA-C, MS is a physician assistant in the department of neurosurgery at the Johns Hopkins Bayview Medical Center. She earned a bachelor of science degree in behavioral neuroscience from Lehigh Univeristy and completed physician assistant training at Arcadia University, graduating with a masters of medical science degree in physician assistant studies. | 
| | | | Sharonda E. Kerth, PA-C Biography: Sharonda E. Kerth, PA-C earned an under-graduate degree from Rutgers University. She completed professional studies at Howard Univeristy to become a physician assistant (PA). Before joining the neurology team at Johns Hopkins Bayview, Kerth practiced obstetric anesthesia and gynecology. | 
| | | | Raven Morris, PA-C, MS Biography: Raven Morris, PA-C, MS, is a physician assistant in the department of neurosurgery at the Johns Hopkins Bayview Medical Center. She earned a degrees at Drexel University and at Towson University, in addition to her participation in Community College of Baltimore County's physician assistant program. | 
| | | | Jian Wu, PA-C, MS Biography: Jian Wu, PA-C, MS, is a physician assistant in the department of neurosurgery at the Johns Hopkins Bayview Medical Center. He received medical training at Shanndong Medical University in China, and physician assistant training at Union College in Nebraska. Wu's clinical interests include neurosurgery. | 
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