Steven D. Mittelman, MD, PhD

Steven D. Mittelman, MD, PhD

Pediatric Endocrinology
Accepting new patients
Primary Location
Westwood Pediatrics
200 Medical Plaza
Suite 265
Los Angeles, California 90095


Dr. Steven Mittelman first became a Bruin in 1989, when he began his undergraduate work as a Biochemistry major. He was proud to be a member of the Solid Gold Sound of the UCLA Marching Band! After earning his BS in Biochemistry from UCLA, Dr. Mittelman went on to earn his PhD in Physiology and a MD at Keck School of Medicine, USC. He completed both his pediatric residency and pediatric endocrinology fellowship at the Children’s Hospital Los Angeles. At CHLA, Dr. Mittelman became the Founding Director of the Diabetes & Obesity Program, as well as the Donnell Society for Pediatric Scientists. He also served as Director of the USC/Caltech Combined MD/PhD Program.

Dr. Mittelman was pursuing research in the physiology of obesity, when he learned about the strong associations between obesity and cancer. Namely, obese people have an increased risk of dying from cancer. Dr. Mittelman learned that children who are obese when they are diagnosed with leukemia have a worse prognosis. Based on this clinical observation, Dr. Mittelman developed preclinical models to investigate how obesity influences leukemia outcome. This has resulted in several interesting discoveries which he continues to pursue. Dr. Mittelman is also involved in a number of other obesity-related research projects, primarily working on understanding the causes and treatments of childhood obesity and how adiposity alters physiology and leads to long-term consequences. His research program is funded by the NIH and private foundations, and has resulted in over 75 publications. Dr. Mittelman also has extensive clinical experience and enjoys working with patients to improve their quality of life.




Medical Board Certification

Pediatric Endocrinology, American Board of Pediatrics, 2007


Children's Hospital of Los Angeles, 2006


Children's Hospital of Los Angeles, 2004


Children's Hospital of Los Angeles, 2002


Keck School of Medicine of USC, MD, 2001
University of Southern California, PhD, 2001


Hospital Affiliations

Ronald Reagan UCLA Medical Center

UCLA Santa Monica Medical Center



  • Childhood Obesity
  • Obesity and Cancer

Research projects

  • Links between obesity and childhood leukemia
  • How adipocytes contribute to inflammation and insulin resistance
  • Novel approaches to treating childhood obesity

Research environment

  • Laboratory: The Pediatric Endocrine laboratory encompasses 2600 square feet of laboratory space, equipped for molecular biology and tissue culture.
  • Animals and animal care: The small animal facilities at UCLA house our animals. These facilities are extensive and meet all regulatory requirements, are fully staffed, and appropriately supervised.
  • Endocrine faculty take advantage of a number of cutting edge UCLA core facilities, including the transgenic and knockout mouse, proteomics, mouse metabolic and physiology, human genetics, assay development, and sequencing cores.
  • Research faculty in the Division participate in the School of Medicine’s Metabolism Research Theme

Research bibliography
For a complete up-to-date list, please cross-reference individual faculty in PubMed.


  • Top Doctors, Los Angeles Magazine, 2022
  • Top Doctors, Los Angeles Magazine, 2021
  • Top Doctors, Los Angeles Magazine, 2018
  • 2018 Membership in American Pediatric Society
  • 2015 DAISY Interprofessional Team Award
  • 2010 Membership in Society for Pediatric Research