Dr Phitsanuwong is Pediatric neurologist and epileptologist who specialises in the treatment of children with epilepsy, using medication and medical diets. He has an expertise in ketogenic diets for the treatment of difficult-to-control seizures, particularly when epilepsy surgery is not deemed an option. When surgery is the recommended treatment option, Dr Phitsanuwong provides pre-surgical evaluation and post-surgical care for children in the Pediatric Epilepsy Center. He also offers comprehensive evaluation for children with other neurological conditions. His interests include drug-resistant epilepsy, dietary therapy for epilepsy, and the genetics of epilepsy, in addition to providing pediatric care for epilepsy and other neurological conditions in underserved communities.

Dr Phitsanuwong is also serving as a teacher and mentor to child neurology residents and EEG technicians. His research interests include ketogenic diets and epilepsy genetics.