Individuals between age 1 and 18 years who present to the endocrinology clinic for management of elevated BMI/Obesity (Body Mass Index≥95th percentile of age and gender), will be given the opportunity to read the consent form, have any questions/ concerns addressed prior to obtaining informed consent from the research team (consisting of the PI and the Co-investigators) who are also part of the child's clinical care team. The child's clinician will introduce the study to the parents. The Investigator will obtain written informed consent from the child's parents. The clinical care team/research registry investigators will address any questions and concerns prior to obtaining written informed consent and any future questions and concerns. In this manner, Patients seen at the Phoenix Children's Hospital (PCH) Division of Endocrinology and Diabetes with an obesity diagnosis will be asked to provide their written informed consent to allow their past, current and future identifiable medical record information related to their obese condition to be placed in the Pediatric Obesity Research Registry.