324 Background: Overweight and obesity (BMI>95 percentile) in the pediatric population has become a prominent problem. The prevalence of pediatric obesity has increased from 5% in 1976-1980 to 17% among children and adolescents in 2007-2008. The presence of obesity in survivors of certain childhood cancers has been identified as a late effect of therapy, especially in survivors of ALL and brain tumors. Obesity prevalence following treatment for ALL ranges from 11-57%. The long-term health consequences of obesity include diabetes mellitus, hypertension, cardiovascular disease, metabolic syndrome and certain cancers. Kaiser Permanente (KP) tracks pediatric BMI as part of routine health maintenance. There is an initiative to promote Healthy Eating and Active Living (HEAL) and reduce childhood obesity. As part of this initiative the HEAL clinic provides a multi-disciplinary weight management program for the general adolescent population at KP Los Angeles Medical Center (LAMC). Methods: A chart review was conducted using the electronic medical record system at LAMC. 99 records, 22 current patients and 77 survivors of ALL, were identified and reviewed for Body Mass Index (BMI) and compared to the general pediatric population of KP in Southern California. Results: See Table. 57 leukemia patients and survivors were identified as overweight or obese, which is a 57.5% prevalence rate. This is significantly higher than the rate of pediatric overweight and obesity of 37.1% in the KP Southern California general population. Conclusions: The use of an electronic medical record system confirms a higher prevalence of overweight and obesity in the ALL patients and survivors at KP LAMC than the general pediatric population in Southern California. The intervention piloted by the HEAL clinic has been adapted to treat this group of overweight and obese cancer patients and survivors. [Table: see text]