Functional & Movement Disorder Surgical Program Team Members

Amir H. Faraji, MD, PhD
Director, Functional & Movement Disorder Surgical Program 
Dr. Amir H. Faraji specializes in neuromodulation for movement disorders and epilepsy, brain and spinal tumors, spinal cord stimulation, laser ablation, radiosurgery, and peripheral nerve surgery.

Tetsuo Ashizawa, MD
Dr. Tetsuo Ashizawa specializes in inherited neurodegenerative disorders, including ataxia, myotonic dystrophy and Huntington’s disease.

Andrew Billnitzer, MD, MPH


Dr. Andrew Billnitzer specializes in chronic neurological conditions including ataxia, essential tremor, Huntington's disease, Parkinson's disease and restless leg syndrome. 

Eugene Lai, MD, PhD
Dr. Eugene Lai specializes in the causes and treatments of neurodegenerative diseases, such as Parkinson's disease, Alzheimer's disease, amyotrophic lateral sclerosis, and other related disorders.  

William G. Ondo, MD 
Dr. William G. Ondo specializes in the diagnosis, treatment, and research of Parkinson's disease, essential tremors, the use of botulinum toxins in treating movement disorders, restless legs syndrome, and other movement disorders. 

Olga Waln, MD
Dr. Olga Waln specializes in the evaluation and management of patients with Parkinson's disease, tremors, dystonia, chorea, tics and gait disorders, including botulinum toxin treatment, deep brain stimulation and intrathecal baclofen pump treatment.