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Alaina Vidmar MD

Alaina P. Vidmar MD

Assistant Professor of Clinical Pediatrics, Division of Pediatric Endocrinology, Diabetes, and Metabolism, Keck School of Medicine, University of Southern California; Medical Director, Obesity Medicine, and Bariatric Surgery, Children's Hospital Los Angeles, Los Angeles, California

Alaina Vidmar, MD, is an Assistant Professor in Pediatric Endocrinology, a Board Certified Pediatric Obesity Medicine Specialist, and the Medical Director of the Obesity Medicine and Bariatric Surgery Program at Children’s Hospital Los Angeles. Dr. Vidmar received her medical degree and completed her residency in Pediatrics at the Children's Hospital of Wisconsin. She completed her fellowship in Pediatric Endocrinology at Children's Hospital Los Angeles.

Dr. Vidmar’s main research and clinical interest is improving patient outcomes through novel clinical approaches and behavioral interventions for youth with overweight and obesity. Dr. Vidmar’s lab is interested in three components of the treatment of obesity in adolescents: 1) Chrononutrition: Dr. Vidmar is interested in investigating how pediatric chronobiological intersects with nutrition and obesity. She is gathering data to investigate how time-restricted eating effects cardiometabolic health and glycemic profiles in adolescents across the spectrum of beta cell dysfunction. 2) Cognitive phenotyping: Dr. Vidmar's lab aims to investigate the relationship between food addiction, executive function, and mood in adolescents with obesity to better understand how these phenotypes impact treatment engagement and response. 3) Intervention Delivery Modalities: Her lab aims to utilize app-based interventions to deliver targeted treatment in their real life setting to determine which delivery method is most cost effective at promoting sustained behavior change and weight control.

Dr. Vidmar is an avid sports fan and loves to spend time with her husband Ryan and two children, Mia, and Riley, while cheering for all of her favorite sports teams.


Medical School

Medical College of Wisconsin


Children's Hospital of Wisconsin, Pediatric Internship


Children's Hospital of Wisconsin, Pediatric Residency


Children's Hospital of Los Angeles, Pediatric Endocrinology Fellowship



American Board of Pediatrics
American Board of Pediatric Endocrinology
American Board of Obesity Medicine



Dr. Vidmar reports the following: Consulting fees for participation in an Advisory Board for Rhythm Pharmaceuticals 11/2023.

Recent Contributions to PracticeUpdate:

  1. Major Adverse Events in Youth-Onset Type 1 and Type 2 Diabetes