“In the gradual division of labor, by which civilization has emerged from barbarism, the doctor and nurse have been evolved”

Sir William Osler (1891)

The delivery of health care by a coordinated team of individuals has always been assumed to be a good thing. Patients reap the benefits of more eyes and ears, the insights of different bodies of knowledge, and a wider range of skills. Thus team care has generally been embraced by most as a criterion for high quality care. Despite its appeal, team care, especially in the primary care setting, remains a source of confusion and some scepticism.1 Which disciplines are essential on the team? What do the team members other than the doctor do to support patient care?

With the ageing of the population and the advances in the treatment of chronic diseases, teamwork in the context of chronic diseases needs to be re-examined. Successful chronic disease interventions usually involve a coordinated multidisciplinary care team.2^–5

In this article I consider the implications of these observations for the structure and functioning of patient care teams in primary care. My work is rooted in US health care, and the references and roles described largely reflect that perspective. I performed a Medline search for randomised controlled trials of team care using the MeSH heading “patient care team.”