This study aimed to provide an in-depth understanding of the way in which the macro, meso, and micro levels of the health care system affects nutrition care practices of family physicians (FPs) and nurse practitioners (NPs). It also examined how current practices compare to the clinical practice guidelines on the management and prevention of obesity. Three different types of team-based primary care settings were included: 2 Family Health Teams, 3 Community Health Centres and 1 Nurse Practitioner-Led Clinic. Within each type of setting, six to eight FPs and NPs were interviewed (for a total n= 20). Site-specific documents and government reports were also analyzed. Findings suggest that the team-based nature improves nutrition care due to the accessibility to dietitians and cost-free service. Electronic Medical Records was an important enabler for chronic disease management. Duration of medical visits and increasing prevalence of complex patients were barriers for addressing nutrition and weight. Despite the importance of addressing obesity in primary care, the topic was approached in terms of chronic disease management rather than prevention. FPs and NPs spared the dietitian on site for patients who have more severe chronic conditions. Nevertheless, the presence of a dietitian on site increased the likelihood of primary care providers bringing up the topic of nutrition. Addressing site-specific barriers could improve nutrition care practices for weight management and chronic disease prevention in the primary care setting.