Brad Marshall is the principal psychologist at Northshore Kidspace, in Chatswood, NSW, and the clinical director of its Internet Addiction Clinic. In his clinic, Brad provides mental health services to young people and supports families with finding a balance between healthy screen time and problematic overuse.

He specialises in the treatment of children and adolescents experiencing excessive internet use (internet addiction) and related disorders such as gaming addiction. After completing his undergraduate studies at Macquarie University, Brad accepted a position in the United States treating children and adolescents with extreme behavioural difficulties.

Brad returned Australia to complete his Masters qualification at the University of Sydney. Prior to establishing Northshore Kidspace in 2010, Brad held positions at the University of Notre Dame Australia and in various public hospitals, including Royal North Shore Hospital, Bankstown Hospital and Ryde Hospital, working with children and families as part of the Child and Adolescent Mental Health Service.

Brad is well-respected presenter and guest speaker, providing professional development to teachers and health professionals, and running seminars for parents, students and teachers. He also runs seminars and workshops in the corporate space, speaking to staff about the benefits of healthy internet use at home, and how to be productive and balanced when at work.

Brad has been interviewed for his opinion on a scope of mental health issues across the media, including providing consultation for Channel 9's Today Show, ABC's 7:30 Report and Channel 7's Sunday Night Program. He is an active member of Network for Internet Investigation and Research Australia (NIIRA).