This chapter provides an overview of models of change for behavioral and health disorders as applied to integrated pediatric primary care settings. It describes how Behavioral Health Consultants (BHCs) can employ these models to facilitate health behavior change in patients. The socioecological model is presented as an overarching framework for understanding the multiple levels of influence on health behaviors. Four additional models are discussed: the transtheoretical model, health belief model, theory of planned behavior, and social cognitive theory. This chapter explores how these models conceptualize behavior change processes and can guide interventions. Considerations specific to pediatric populations are highlighted, including the important role of caregivers. Two case vignettes demonstrate the practical applications of the health belief model for addressing child discipline and the transtheoretical model for improving dietary intake in adolescents. By considering multiple levels of influence and tailoring approaches accordingly, BHCs can develop targeted and effective strategies to facilitate behavioral change in pediatric patients and families.