Behavioral parent training programs show clear efficacy and effectiveness in response to young children's disruptive behavior problems, but limitations in engagement and accessibility prevent many families from benefiting from these programs. The Parenting Young Children Check-up (PYCC) is a technology-based program designed to overcome these barriers and increase the reach of behavioral parent training. Developed for use in pediatric health care, the PYCC includes three components: 1) an initial check-up designed to motivate program involvement; 2) text messages to connect parents with program content and reinforce content; and 3) a parent training website involving video-based content to teach parenting skills. This report details initial steps to refine PYCC intervention components. Seventeen mothers and 17 primary care physicians participated in this mixed methods data collection across three iterations by providing feedback on early drafts of the three components of the PYCC and completing a feedback questionnaire. Feedback from one iteration informed modifications that were then evaluated in subsequent iterations. Saturation of qualitative input, positive qualitative feedback, and positive quantitative ratings on the feedback questionnaire was achieved in iteration three. Outcomes of this investigation informed the full version of the PYCC that will subsequently be tested in a proof-of-concept trial. Several barriers limit the reach of parenting skills programs that reduce child problem behavior. We gathered feedback from parents and physicians to refine a parenting program that uses technology and delivery in pediatrics to overcome barriers. Future testing of the program will further inform implementation in pediatric settings.