Preventive parenting interventions delivered by parent peer specialists may be a viable alternative to professional-led interventions and offer an advantage of increasing access in medically underserved areas. The objective of this pilot study was to assess the feasibility and preliminary outcomes of a 10-session, peer specialist-delivered preventive parenting intervention (Smart and Secure Children) for child disruptive behavior. The intervention was evaluated among a small sample of parents (N = 15) of preschoolers (2-5 years) residing in medically underserved communities. Pediatricians referred families to the intervention, which was delivered in primary care practices within medically underserved communities. To determine feasibility, we calculated percentages of pediatricians who referred parents to the intervention, parent peer specialists who completed 40-h interventionist and leadership training, and the average number of sessions attended by parents. Enrolled parents completed questionnaires assessing child disruptive behavior, parenting stress and parenting competence at pre-and post-intervention. Descriptive statistics demonstrated the majority of pediatricians within the clinics referred families, and all parent peer specialists completed training to deliver the intervention. On average, 60% of sessions were attended by parents. Pairwise t-tests showed pre-to-post-intervention improvements in number of child disruptive behaviors perceived as a problem by parents, parenting stress and parenting competence. No significant change was found in parent-reported frequency of child disruptive behaviors. Results suggests adequate feasibility of the Smart and Secure Children Intervention, and that it holds promise for improving parenting stress and competence, and decreasing the number of child behaviors that are perceived as a problem by parents. Future directions for research are discussed.