Appointment 

• Investigator & Attending Physician, Institute of Population Health Sciences , National Health Research Institutes, Taiwan
• Investigator & Attending Physician (joint appointment), Center for Neuropsychiatric Research , National Health Research Institutes, Taiwan
• Attending Physician, National Taiwan University Hospital

Personal Information

I am a psychiatrist and mobile application developer whose work sits at the intersection ofpsychiatry, digital health, and population–based health services. Since designing my first app in2011, I have led the development of smartphone applications such as “Know Addiction,”“Rhythm,” and “Staff Hours,” which passively record smartphone use, long–term sleep–wakepatterns, and work hours. Using these high–frequency digital traces alongside national healthinsurance claims and other large–scale datasets, my research program focuses on developing digitalbiomarkers, characterizing circadian and behavioral patterns, and understanding their implicationsfor mental health and functioning. I have published more than 90 articles in international journals(H index=29), includingNeuroscience and Biobehavioral Reviews, Journal of Medical Internet Research,Journal of Behavioral Addictions, Brain, Behavior, and Immunity, JAMA Psychiatry, JAMA Pediatrics, and JAMA. I serve as an Associate Editor for the Journal of Medical Internet Researchand as a member of the Editorial Board of theAsian Journal of Psychiatry. My work emphasizes rigorousquantitative methods, transparent reporting, and policy relevance, spanning topics such as digitalphenotyping, internet and smartphone addiction, sleep and circadian rhythms, COVID–19 infodemiology, and national mental healthworkforce planning. Earlier in my career, I worked as a product physician at Pfizer Taiwan, which provided experiencein multinational collaboration, clinical trial management, biomedical regulation, and scientificcommunication. I also actively engage in science communication via traditional and social media, including podcasts and visual abstracts, to translate research into accessible messages forclinicians, policymakers, and the public.

Research & Clinical Interests