Currently a full-time staff specialist Neurologist in the Department of Neurosciences at Monash Health, Prof Phan undertakes ward service at both Clayton and Dandenong campuses, consults at Monash Neurology and in addition runs comprehensive stroke, young stroke, TIA and Minor stroke outpatient clinics. He is actively involved in the teaching of Advanced Physician Trainees in both Neurology and Stroke and provides supervision for a Doctorate student and the Monash Stroke Fellowship program.

Prof Phan is also extremely active in conducting research into several aspects of cerebrovascular disease and neurological diseases. He leads the Acute Stroke, Data mining and Imaging Division of the Stroke and Ageing Research Group (STAR) in the Department of Medicine, School of Clinical Sciences at Monash Health. These include neuroimaging studies involving CT, MRI, PET and LORETA transformation of EEG studies, health service modelling and evaluation, basic and computational studies of the cerebral circulation, and clinical trial design. Outside of cerebrovascular diseases, his neurological research interests include video-based neurological teaching (e.g. seizure recognition) prediction of coma outcome and migraine. He is chief investigator on NHMRC grants and currently supervises 4 PhD students; three students have successfully completed PhD and one has completed Dpsych degrees.