Poorly-managed early childhood disruptive behavior disorders (DBDs) have costly psychological and societal burdens. While parent management training (PMT) is recommended to effectively manage DBDs, appointment adherence is poor. Past studies on influential factors of PMT appointment adherence focused on parental factors. Less well studied are social drivers relative to early treatment gains. This study investigated how financial and time cost relative to early gains influence PMT appointment adherence for early childhood DBDs in a clinic of a large behavioral health pediatric hospital from 2016 to 2018. Using information obtained from the clinic's data repository, claims records, public census and geospatial data, we assessed how owed unpaid charges, travel distance from home to clinic, and initial behavioral progress influences total and consistent attendance of appointments for commercially- and publicly-insured (Medicaid and Tricare) patients, controlling for demographic, service, and clinical differences. We further assessed how social deprivation interacted with unpaid charges to influence appointment adherence for commercially-insured patients. Commercially-insured patients had poorer appointment adherence with longer travel distances, or having unpaid charges and greater social deprivation; they also attended fewer total appointments with faster behavioral progress. Comparatively, publicly-insured patients were not affected by travel distance and had higher consistent attendance with faster behavioral progress. Longer travel distance and difficulty paying service costs while living in greater social deprivation are barriers to care for commercially-insured patients. Targeted intervention may be needed for this specific subgroup to attend and stay engaged in treatment.