Dr. Sirichai Chayasirisobhon headshot

Sirichai Chayasirisobhon, MD, FAAN

Associate Investigator


Orange County–Anaheim Medical Center




Dr. Sirichai Chayasirisobhon is director of Neurological Clinical Research and the director emeritus of the Adult Epilepsy Center in the Department of Neurology at the Kaiser Permanente Orange County–Anaheim Medical Center. He specializes in epilepsy care and has been repeatedly recognized as a Physician of Excellence in Neurology by the Orange County Medical Association. He is a retired professor of the Department of Neuroscience at Charles R. Drew University in Los Angeles, where he taught for 15 years.

Dr. Chayasirisobhon is actively engaged in industry-sponsored research into the drug treatment of epilepsy in several multicenter placebo-controlled and dose-response clinical trials in patients with partial onset seizures. He has recent publications on the efficacy of vagus nerve stimulation as a treatment for epilepsy. His research has also addressed the use of a pine bark extract and antioxidant vitamin combination as a treatment for migraine.

Areas of Focus

  • Epilepsy


Fellowship, Neurology
Lafayette Clinic and Wayne State University
Detroit, Michigan
McGill University
Montreal, Canada
Ramathibodi Hospital & Medical School, Mahidol University
Bangkok, Thailand

Honors and Awards

Physician of Excellence, Neurology, Orange County Medical Association
Patient's Choice Award, American Registry
Clinical Trial Access Merit Award, Southern California Permanente Medical Group
Merck Foundation Research Award, Taiwan Neurological Society