Dr Hambleton is an adjunct Professor with the University of Queensland and a General Practitioner in Brisbane. He is a former State and Federal President of the Australian Medical Association.
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 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 has served the Agency as Co-Chair of Clinical Programs including Radiology and Pathology and the Clinical Governance Committee. 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 newly formed Digital Health Cooperative Research Centre. He is an independent Director of the Queensland Aboriginal and Islander Health Council.