Background: Each year, many children are undiagnosed as obese, even though they meet criteria based on their body mass index. Several studies have shown that early diagnosis and treatment of obesity in the pediatric population lead to better health outcomes as adults in the future. Purpose: A quality improvement project was conducted to provide data in support of using an assessment tool to improve the diagnosis of obesity in children. Methods: A pre-post design was used with a pre-intervention chart review. Upon completion, health care providers were educated on the importance of identification, diagnosis, and treatment of childhood obesity. Following the targeted education, the obesity management physician form (OMPF) was embedded in the chart as a tracking tool for obesity treatment interventions. Results: The percentage of children who were correctly diagnosed and treated by health care providers for childhood obesity increased from 82% to 92% within the 8-week project period. Conclusions: The study supports the utilization of an assessment tool to increase the diagnosis and management of childhood obesity. The use of an assessment tool, such as the OMPF, in the clinical setting is valuable in representing an increase in the rate of assessment, documentation, diagnosis, and treatment of childhood obesity. [ABSTRACT FROM AUTHOR]