This research study assesses the impact on primary health care of the reform changes in the South Australian health system from 2005 to 2007. The research follows a pilot study conducted in one of the newly created health regions in 2005 to 2006 and reported in: Governance change in the southern metropolitan Adelaide health region: implications for Primary Health Care (Baum et al. 2006). Both studies were intended as scoping exercises to contribute towards the development of an evaluation framework for primary health care