Given its core attributes as the gateway to the health system, the primary care sector is increasingly emphasized as a key player in the integration of care across providers and settings. Ontario’s primary care sector has evolved considerably with the introduction of new inter-disciplinary models of primary care, including Family Health Teams FHTs and Community Health Centres CHC. However, our understanding of the specific features that enable integration within primary care teams is limited. This study sought to examine the extent and drivers of intra-organizational integration collaboration within team-based primary care models in Ontario specifically FHTs and CHCs.