Gawaine Powell Davies is CEO of the Centre for Primary Health Care and Equity and the leader of its primary health care research stream. He has been involved for some years in research and evaluation on developing the capacity of primary health care services and systems to address complex health problems. His research interests include health services integration, including integration within primary health care and integration between primary health care and other sectors; and the evolving role of primary health care within the health system. He is currently leading the evaluation of Medicare Locals, part of whose role is to support primary health care to address complex issues like obesity.