There are disparities in child mental health treatment access and treatment retention in terms of race and ethnicity, socioeconomic status (SES), and insurance coverage. Institutions have invested in the integrated primary care (IPC) treatment model with the goal of improving treatment access and promoting child mental health equity. This study compared treatment attendance in an outpatient psychiatry clinic (OPC) versus an IPC clinic to assess whether the IPC was associated with reduced disparities in access to care and treatment retention. This study assessed whether there were differences in who is connected to care from the intake appointment to first follow-up appointment. Results showed that the IPC clinic served a more diverse patient population than the OPC clinic in terms of SES, race, and ethnicity. Differences in treatment attendance in the IPC and OPC were also found. After controlling for race, ethnicity, insurance, and distance from patient's home zip code to clinic, the IPC treatment setting was associated with poorer intake and follow-up appointment attendance. The IPC model may be more accessible to historically underserved youth, but the treatment setting does not inherently eliminate disparities in child mental health treatment retention. Replication of this study has the potential to contribute to the external validity of study findings, improve quality assurance policies, and develop equitable workflow policies. Future research is needed to identify factors that can improve treatment attendance for populations who face greater retention barriers and to shine light on ways that healthcare systems may inadvertently maintain disparity in treatment retention.