The objective of this study was to train pediatric providers to address weight, body mass index (BMI), diet, and physical activity with parents. Children aged 8 to 12 years with BMI of >or=85th percentile were eligible if accompanied by a parent. The intervention was a family-based, 11-session behavioral program focusing on healthy eating and physical activity. Outcome measures were weight and BMI. Seventy-three child-parent dyads enrolled. Children who attended at least 6 of 8 intervention sessions and 1 of 3 follow-up sessions (completers) lost an average of 2.84 lb; change in BMI z scores was statistically significant at 5 months (P < .001). Primary care providers can acquire skills to increase their confidence in approaching children and parents regarding weight and BMI. Parents and children will attend an intervention targeting healthy weight in the pediatric practice. Professional office staff can be trained to provide an evidence-informed intervention that promotes healthy weight.