The ability of Prevention Plus to improve weight status when delivered by primary care providers is unknown, and the influence of household food security status as a moderator in the treatment of childhood obesity has never been examined. Thus, the investigators will conduct a randomized controlled trial (RCT) examining Prevention Plus delivered by CHS primary care providers on child zBMI in underserved children receiving their primary care at CHS who are overweight and obese, and test the moderating effect of household food security status on Prevention Plus delivered with and without caretaker goals