He currently serves as medical director of psychiatric emergency services at Acadia Hospital, Bangor, Maine. Dr. Ng has extensive experience in the area of primary care and mental health, crosscultural issues, community system issues, substance abuse and homeless issues, and disaster psychiatry. He also is involved in community mental health and emergency psychiatry. He is the immediate past president of the American Association of Emergency Psychiatry and is the former chairperson of the New York State Office of Mental Health Multicultural Advisory Committee.