What is population health? Apparently it depends on who you ask. If you ask those with a financial stake in the current health care delivery system, population health means improving the health of patients who currently use (i.e., pay for) the system. You get a different answer if you ask those involved in public health, community development, or social services. They believe “population” should include everyone in the entire geographic community, whether or not those individuals are able to use or benefit from health care services. They also believe “health” should include quality of life and economic well-being – measures that prevent disease in the first place – and not just conditions addressed by the medical model of disease.