Dr. Michael M. Mcdowell

Chetan Bettegowda is the director of the Johns Hopkins Department of Neurosurgery. He offers comprehensive treatments for adult patients with benign and malignant brain tumors, specializing in the treatment of patients with primary brain tumors such as gliomas, meningiomas and pituitary tumors. He performs both open surgery and stereotactic radiosurgery for patients with metastatic tumors to the brain, and also provides stereotactic radiosurgery for other neurological disorders, including spinal tumors, trigeminal neuralgia and skull-base tumors. Dr. Bettegowda is rated as an Elite provider by MediFind in the treatment of Bone Tumor. His top areas of expertise are Trigeminal Neuralgia, Astrocytoma, Glioblastoma, Rhizotomy, and Microvascular Decompression.

Dr. Timothy Witham is a professor of neurological surgery and orthopaedic surgery at the Johns Hopkins University School of Medicine. His interests include the surgical treatment of degenerative conditions of the cervical and lumbar spine, including instrumented fusion procedures. He also has an expertise in the treatment of spinal tumors, spinal trauma and spinal deformity. Dr. Witham serves as director of the Johns Hopkins Neurosurgery Spinal Fusion Laboratory, director of Johns Hopkins Bayview Medical Center's Spine Program and co-program director of the Johns Hopkins Neurosurgery Residency Program. Dr. Witham received his B.S. in biochemistry from the Pennsylvania State University. He earned his M.D. from the Johns Hopkins University School of Medicine. He completed his residency at the University of Pittsburgh Medical Center. He performed a fellowship in spinal neurosurgery at Johns Hopkins. Dr. Witham joined the Johns Hopkins faculty in 2005. Prior to joining Johns Hopkins, Dr. Witham was chief neurosurgeon at Keesler Medical Center at Keesler Air Force Base in Biloxi, Mississippi. Dr. Witham's research interests include finding novel ways to achieve spinal fusion and improving surgical techniques in the aging spine. A co-author of more than 170 peer-reviewed articles and abstracts, Dr. Witham has been featured as a “Top Doctor” in Baltimore magazine and was a recipient of a United States Air Force meritorious service medal in 2005. He is a member of various professional organizations, including the American College of Surgeons and American Association of Neurological Surgeons. Dr. Witham is rated as a Distinguished provider by MediFind in the treatment of Bone Tumor. His top areas of expertise are Spinal Stenosis, Bone Tumor, Epidural Abscess, Spinal Fusion, and Laminectomy.

Vinayak Narayan, MD, FACS, FRCS (Ed), IFAANS, is a neurosurgeon at the UPMC Neurological Institute, specializing in cerebrovascular and cranial base neurosurgery, interventional neuroradiology, and stereotactic and functional neurosurgery.   Dr. Narayan graduated with honors from Government Medical College, Trichur, India, and completed the neurosurgery residency program at the National Institute of Mental Health and Neurosciences, Bangalore, India, followed by postdoctoral fellowship in cerebrovascular and skull base surgery and neurointerventional surgery at the Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA, and Rutgers Robert Wood Johnson Medical School and University Hospital, New Brunswick, NJ. He completed three prestigious clinical fellowships: Stereotactic and Functional Neurosurgery (The Ohio State University Wexner Medical Center, Columbus, OH), Interventional Neuroradiology (NYU Langone Health and Bellevue Hospital Center, New York, NY), and Cerebrovascular Neurosurgery (Northwell Health Lenox Hill Hospital, New York, NY), which are accredited by the Committee on Advanced Subspecialty Training (CAST).   Dr. Narayan is a clinical assistant professor of Neurological Surgery at the University of Pittsburgh and has authored numerous neurosurgical publications, book chapters, and abstracts. He has been on the editorial board of various neurosurgical journals and medical book publishers. He is also an invited faculty in many neurosurgical conferences and is a member of the American Association of Neurological Surgeons, Congress of Neurological Surgeons, North American Skull Base Society, Society of NeuroInterventional Surgery, Royal College of Surgeons of Edinburgh, American College of Surgeons, and American Heart Association. Dr. Narayan is rated as an Advanced provider by MediFind in the treatment of Bone Tumor. His top areas of expertise are Meningioma, Arteriovenous Malformation, Pica, Thrombectomy, and Gamma Knife Radiosurgery.