This research investigated clinicians’ perspectives about the barriers and enablers to service access and optimum care for Australian children with complex mental health conditions. Clinicians identified several barriers to accessing care including healthcare system factors (e.g. a lack of policies and/or procedures for the coordination of care); financing structure factors; and parent and family factors (e.g. parents’ capacity to advocate for their child, and parents’ difficulty in navigating the system). The article also identified a range of factors that enabled children's access to needed services including the physical proximity of professionals and subsequent collaborative relationships between providers; and having informed and capable parents. The authors detailed an optimal model of care for children with complex mental health conditions.