Team Members

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U.S. PATIENTS:713.363.8184

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William G. Ondo, MD

Director, Movement Disorders Clinic  
Movement Disorders
Location: Texas Medical Center, Scurlock Tower, Suite 1002
Specializes in diagnosis, treatment and research of Parkinson’s disease, essential tremors, the use of botulinum toxins in treating movement disorders, and restless legs syndrome.  

Amir H. Faraji, MD, PhD
Director, Functional & Movement Disorder Surgical Program 
Movement Disorders
Location: Texas Medical Center, Scurlock Tower, Suite 900
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

Director, Neuroscience Research Program 
Movement Disorders
Location: Texas Medical Center, Scurlock Tower, Suite 802
Specializes in inherited neurodegenerative disorders, ataxia, myotonic dystrophy and Huntington’s disease.  

Andrew Billnitzer, MD, MPH

Movement Disorders
Location: Texas Medical Center, Scurlock Tower, Suite 1002
Clinical interest includes tremor, dystonia, Tourette’s syndrome, Huntington’s disease, restless legs syndrome, drug induced movement disorders, and atypical parkinsonism.

Olga Waln, MD

Movement Disorders
Location: Texas Medical Center, Scurlock Tower, Suite 1002
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.