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Team Members

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U.S. PATIENTS:713.363.8184

INTERNATIONAL PATIENTS:+1.713.441.2340

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.  
713.363.8184

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.  
713.363.8184

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.
713.363.8184

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. 
713.363.8184