| Timothy Witham, M.D., FACS, Director Assistant professor of neurology and director of the Johns Hopkins Bayview Spine Program, Timothy Witham, M.D., FACS, focuses on complex spinal disorders. His interests include the surgical treatment of degenerative conditions at the cervical and lumbar spine to include instrumented fusion and dynamic stabilization procedures. Board-certified by the American Board of Neurological Surgery, Dr. Witham has interests in the treatment of spinal tumors, spinal trauma and degenerative disorders including spinal deformity. Dr. Witham earned a bachelor's of science with honors at the Pennsylvania State University and a medical degree at The Johns Hopkins University School of Medicine. He completed an internship in general surgery and a residency in neurological surgery at the University of Pittsburgh, as well as advanced training in complex reconstructive spinal surgery and spinal oncology at Johns Hopkins, under the direction of Dr. Ziya Gokaslan. Prior to joining Johns Hopkins, Dr. Witham served in the U.S. Air Force as Chief of the Neurosurgery Element at Keesler Air Force Base in Biloxi, Mississippi. | |
| Ali Bydon, M.D., Clinical Director Ali Bydon, M.D., clinical director of the Johns Hopkins Bayview Spine Program and assistant director of neurosurgery, specializes in degenerative disorders of the spine (cervical, thoracic, and lumbar osteophytes or disk herniations, cervical, thoacic and lumbar spinal stenosis, cervical, thoracic and lumbar spondylolisthesis, spondylosis, spondylolysis and degenerative coliosis), neoplastic disorders of the spine (intradural spine tumors, intramedullary spine tumors, extradural metastatic spine tumors, spine meningiomas, spine schwannaomas), traumatic spinal cord and vertebra column injuries; complex reconstruction and restoration of the spine; and minimally invasive spine surgery. Dr. Bydon earned a medical degree at the University of Michigan School of Medicine in Ann Arbor. He completed residency training in neurological surgery at the Henry Ford Hospital in Detroit where he graduated with distinction. He also completed a fellowship in minimally-invasive spine surgery at Henry Ford as well as a fellowship at Louisiana State University on the surgical treatment of peripheral nerves. | |
 | Judy Huang, M.D. Associate professor of neurosurgery and director of cerebro-vascular neurosurgery, Judy Huang, M.D., specializes in the treatment of cerebrovascular disorders such as cerebral aneurysms, carotid artery stenosis and arteriovenous malformations (AVMs). She also focuses on the treatment of spinal disorders, and primary and metastatic brain tumors. Dr. Huang earned a medical degree at the Columbia University College of Physicians and Surgeons in New York. There, she also completed residency training in neurological surgery and pursued a fellowship in neurovascular research. Active in neurological research, Dr. Huang's research focuses on the inflammatory mechanisms of stroke, as well as intracerebral hemorrage and aneurysmal subarachnoid hemorrage. She is further investigating gender differences in stroke and other cerebro-vascular diseases. Dr. Huang has published extensively on experimental studies of stroke and carotid endarterectomy, including a widely used handbook of operative neurosurgery. Dr. Huang has received a number of awards, including the Young Clinician Investigator Award from the Neurosurgery Research and Education Foundation of the American Association of Neurological Surgeons, and the School of Medicine Clinician Scientist Award. She has received several teaching awards and serves as co-director of the Neurosurgery Residency Training Program as well as the director of Medical Student Education. | |
 | Alessandro Olivi, M.D. Alessandro Olivi, M.D., professor of neurology and director of neurosurgical oncology, focuses on the surgical treatment of primary and metastatic tumors of the brain and spinal cord. He performs microsurgery on skull-based tumors, such as acoustic neuromas, meningiomas and vascular lesions. Dr. Olivi also holds clinical intrests in cerebrovascular conditions and craniofacial reconstructions. Actively involved in designing and running clinical experimental protocols, Dr. Olivi has worked to develop and assess new treatments for patients with brain tumors. He also leads multi- Dr. Olivi is involved in several research activities in the areas of immuno-therapy for brain tumors, cancer stem cells and new drug delivery systems. | |
 | Dan Sciubba, M.D. Dan Sciubba, M.D., assistant professor of neurosurgery, oncology and orthopaedic surgery at The Johns Hopkins University School of Medicine, specializes in all aspects of spine disease, with a focus on the surgical treatment of complex spinal reconstructions and spinal tumors. His interests lie in the treatment of all categories of spine pathology (degenerative, trauma, tumor and deformity) with minimally invasive approaches. Dr. Sciubba earned a medical degree at Columbia University. He completed an internship in general surgery, residency in neurological surgery and an infolded complex spine fellowship at The Johns Hopkins University School of Medicine, as well as a traveling orthopaedic spine fellowship in pediatric spine deformity at Shriners Hospitals for Children. | |
 | Jean-Paul Wolinsky, M.D. Jean-Paul Wolinsky, M.D., assistant professor of neurosurgery and clinical director of the Johns Hopkins Spine Program, cares for patients with any neurosurgical problem. His primary neuro-surgical interests lie in neurosurgical oncology, pathology of the occipital-cervical junction and complex spinal reconstruction. He has been actively developing new approaches to spinal surgery and concepts for spinal reconstruction. Dr. Wolinsky earned a medical degree at Baylor College of Medicine in Houston, where he subsequently completed neurosurgery training. In addition to general neurosurgical training, he gained extensive trauma experience at Ben Taub Hospital, one of the world’s largest trauma hospitals. He also received specialized training in neurosurgical oncology at M.D. Anderson Cancer Hospital during his residency. After the neurosurgical residency, he completed an AO Spine fellowship in complex reconstructive spine surgery and spinal oncology at The Johns Hopkins Hospital. | |
 | Richard Zorowitz, M.D. Richard D. Zorowitz, M.D., associate professor and chairman of physical medicine and rehabilitation at Johns Hopkins Bayview Medical Center, is board-certified in physical medicine and rehabilitation, as well as spinal cord injury medicine. His clinical interests lie in neuro-rehabilitation, including acquired brain and spinal cord injury, spasticity and neuropathic pain. He also holds research interests in stroke rehabilitation and functional outcomes. Dr. Zorowitz earned a medical degree at Tulane University School of Medicine. He completed an internship in internal medicine at the Long Island Jewish Medical Center, as well as a residency in physical medicine and rehabilitation at the Rehabilitation Institute of Chicago, Northwestern University. | |
 | Michelle Clarke, M.D. Michelle Clarke, M.D., an instructor in neurosurgery, specializes in degenerative disorders of the spine, neoplastic disorders of the spine (including intradural, intramedullary and extradural metastatic spine tumors), and traumatic spinal cord and vertabra column injuries. Dr. Clarke earned a bachelor's degree with honors in aerospace engineering, with a minor in biology, at Princeton University. She completed medical training at Georgetown University School of Medicine, as well as a residency in neurological surgery at Mayo Clinic and specialized training in spinal oncology at The Johns Hopkins University School of Medicine. | |
 | Reza Yassari, M.D. Reza Yassari, M.D., instructor in neurosurgery at The Johns Hopkins University School of Medicine, focuses on degenerative, traumatic and neoplastic diseases of the spine. He holds a special interest in minimally invasive techniques, and complex and reconstructive spine surgery. Dr. Yassari earned a medical degree at the University of Vienna. After earning a Master of Science at the University of Chicago, he completed a residency in neurosurgery at University of Chicago Medical Center and a fellowship in medical ethics at University of Chicago's MacLean Center for Clinical Medical Ethics. He also received specialty training in spinal oncology at The Johns Hopkins University School of Medicine. | |
| Jared Abay, MS, PA-C Jared Abay, MS, PA-C, is a senior physician assistant in the department of neurosurgery at Johns Hopkins Bayview. Abay earned an undergraduate 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. | |
 | Sharonda E. Keith, PA-C Sharonda E. Keith, PA-C, is a physician assistant in the Department of Neurosurgery at Johns Hopkins Bayview Medical Center. She earned a bachelor of arts degree at Rutgers University, as well as a bachelor of science degree at Howard University, where she also completed physican assistant training. Keith currently is pursuing a master of science degree with an emphasis in neurosurgery at The University of Nebraska. | |
 | Kearra Wagner, MS, PA-C Kearra Wagner, MS, PA-C, is a physician assistant in the department of neurosurgery at Johns Hopkins Bayview. She earned a bachelor of science degree at West Chester University. She earned a master’s in medical science and completed physician assistant training at Arcadia University. |
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Faculty & Staff
Recent Recognitions
