Population health survey data are not routinely linked to specific health care organizations, limiting organizational capacity to assess performance improvements in relation to the observed risk and prevalence of differences in health. The lack of demographic information hinders the growth of patient-centred care that captures diversity in multiple forms, and presents a barrier to investigating whether past and on-going change initiatives have produced positive outcomes. The following report provides an overview of a four year process among these four organizations: Centre for Addiction and Mental Health (CAMH); Mount Sinai Hospital (MSH); St. Michael’s Hospital (SMH); Toronto Public Health (TPH). Through the development and pilot project trial of a socio-demographic questionnaire, a set of eight questions and three optional questions have been recommended for wide-scale implementation. Research on the equity of health and health care compels action on the collection of socio-demographic data. The results of the Tri-Hospital + TPH Health Equity Data Collection Research Project provide evidence that it is ”doable”.