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 Our Experts

Director of the Center for Neuromodulation, Dr. Ali Rezai is a world-renowned expert who trained with French researchers who developed DBS in the late 1980s while looking for a way to mitigate the tremors caused by Parkinson’s disease. He has performed more than 1,600 deep brain stimulation (DBS) operations.

According to Dr. Rezai, “Our team is among the most experienced in the country with neuromodulation.” Ohio State physicians and researchers are committed to research and finding other clinical applications for DBS such as traumatic brain injuries, spinal cord injuries, epilepsy, obesity, Alzheimer’s disease, autism and post-traumatic stress disorder (PTSD). We are invested in your health care and the health care of future generations.


Ali Rezai, MD

Director, Comprehensive Brain and Spine Center
Director, Center for Neuromodulation
Stanley D. and Joan H. Ross Chair in Neuromodulation
Associate Dean of Neurosciences
Professor, Neurosurgery and Neuroscience

A board certified neurosurgeon, Dr. Rezai’ s clinical areas of expertise are the neurosurgical management of patients with severe movement disorders such as Parkinson’s disease, dystonia, tremor, psychiatric conditions such as depression and obsessive compulsive disorder, traumatic brain injury and chronic pain.

Dr. Rezai’s research focuses on mechanisms of neurostimulation, delineation of abnormal brain circuitry underlying disease processes, as well as developing neuromodulation devices and novel therapeutic strategies for treatment of neurological disorders. He has been involved in pioneering work involving the use of brain pacemakers for treating Parkinson’s disease, depression, obsessive compulsive disorder and traumatic brain injury. His current research focuses on developing neuromodulation therapies to treat migraine headaches, asthma, addictions, Alzheimer’s, obesity, post-traumatic stress disorders and autism.

Dr. Rezai has received the Bottrell Neurosurgical Award, Congress of Neurological Surgeons Clinical Fellowship award, and the American Association of Neurological Surgeons William Sweet Investigator Award. He has also received several innovation awards, including the 2011 Columbus Business First innovator of the year, achievement of the year award for health and Medicine from Northern Ohio Live magazine, Cleveland Clinic innovator of the year award, and NorTech annual Innovation award. He was also featured in Crains’ Who’s Who in Biotech. Dr. Rezai holds 35 issued US patents for medical devices and technologies.


Punit Agrawal, DO

Assistant Professor, Neurology

Dr. Agrawal has specific clinical interest in the use of deep brain stimulation therapy for the treatment of approved movement disorders including Parkinson’s disease, tremor and primary dystonia. He also is trained in and practices treatment of focal dystonia with botulinum toxin therapy. He is involved in clinical research trials for movement disorders and neuromodulation.


Barbara Changizi, MD

Assistant Professor, Neurology

Dr. Changizi cares for patients in the Movement Disorders Division of the Department of Neurology, where she treats a variety of movement disorders including Parkinson’s disease, Parkinsonian syndromes, tremor (including essential tremor, multiple sclerosis tremor), dystonia, ataxia, and Tourette’s Syndrome. She is an expert in botulinum toxin administration for dystonia, tremor, tics and hemifacial spasm. She also has an interest in normal pressure hydrocephalus (NPH), and evaluates patients for a curative surgical treatment of ventriculoperitoneal shunts.


Milind Deogaonkar, MBBS

Associate Professor, Neurological Surgery

Dr. Deogaonkar’s clinical areas of interests are deep brain stimulation for Parkinson’s Disease; movement disorders; spinal cord stimulation for pain; peripheral nerve stimulation for pain; and intrathecal pumps for spasticity. His current research resides in neuromodulation, neural circuitry and functional neuroimaging.

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