Dr Hambleton is a General Practitioner in Brisbane and a former State and Federal President of the Australian Medical Association.
He is Co-Chair of the Primary Health Care Advisory Group and was Deputy Chair of the MBS Review Taskforce.
He was a member of the Review of the Personally Controlled Electronic Health Record (PCEHR) known as the Royle review that supported the continuing development and implementation of a consistent and effective electronic personal health record for all Australians. In June 2014 Dr Hambleton was appointed as Chairman of the National eHealth Transition Authority and oversaw its transition to the Australian Digital Health Agency in July 2016.
Dr Hambleton serves the Agency as the Chief Clinical Advisor to the Senior Executive Committee and CEO. He was the Deputy Chair of the My Health Record Expansion program that has resulted in more than 90 per cent of the Australian population having access to a shared electronic health record.
Dr Hambleton also serves on the Boards of Avant Mutual Group Limited and the Digital Health Cooperative Research Centre and Mercy Community Services and was until recently, a board member of the Queensland Aboriginal and Islander Health Council.