Interprofessional team collaboration (ITC) is pivotal for the safety and the quality of healthcare settings, being associated with higher staff and patient satisfaction. However, individual-level determinants (i.e. socio-demographic and working satisfaction) remain currently largely unexplored. This study aimed to describe the overall ITC (i.e. partnership, cooperation, coordination), identifying the individual-level determinants of each ITC domain. This study had a multicentre approach, using cross-sectional data collection. ITC was assessed using the Interprofessional Team Collaboration Scale II, Italian version (I-AITCS II). The determinants of ITC were investigated through multivariable linear regression models. The study results showed significant associations between the same ITC domains, as well as the important role of work satisfaction in determining cooperation and coordination. Physicians reported more inadequate partnership levels than other healthcare professionals. This study provides insights for future research and gives a useful description of the determinants of ITC for multi-stakeholder healthcare organizations.