Dr Po is a specialist neurologist with particular expertise in multiple sclerosis and other autoimmune neurological disorders. He has a consulting neurology practice, teaches at a postgraduate level, and conducts clinical research.

His special interests include Multiple Sclerosis (MS), Neuromyelitis Optica (NMO), Myasthenia Gravis, Epilepsy and seizures, Neuro-ophthalmology, Stroke and TIA, as well as headaches and migraines.