Yijun Chen, MD

Bariatric Surgery
Accepting new patients
Primary Location
Center for Obesity and METabolic Health (COMET)
200 Medical Plaza
Suite 214
Los Angeles, California 90095


Dr. Yijun Chen is a Health Sciences Associate Clinical Professor in the David Geffen School of Medicine at UCLA.

Dr. Yijun Chen grew up in Hunan, China. He attended Fourth Military Medical School in Xi'an, China. He came to US to do cancer research. He did his postdoctoral training in cancer biology at Stanford University. Dr. Chen completed his surgical residency training at Stanford University, where he found his passion to become a bariatric and minimally invasive surgeon. After finishing his bariatric fellowship at Duke University, he joined UCLA Department of Surgery. He enjoys connecting with and developing partnerships with patients.

Dr. Chen once lost 15 pounds in 3 months to lower his cholesterol. That experience helped him to develop great empathy for obese patients. After seeing many happy patients after weight loss surgery during his bariatric surgery rotation at Stanford, he decided to become a bariatric surgeon because he truly believes that bariatric surgery makes a huge difference for obese patients.




Medical Board Certification

Surgery, American Board of Surgery, 2014


Minimally Invasive & Bariatric Surgery, Duke University Medical Center, 2014


Surgery, Stanford University School of Medicine, 2013


Surgery, Stanford University School of Medicine, 2008


  • Arnold P. Gold Foundation's Humanism and Excellence in Teaching Award

Hospital Affiliations

Ronald Reagan UCLA Medical Center

UCLA Santa Monica Medical Center

Areas of Focus

Minimally invasive surgery
Bariatric surgery


Meet Yijun Chen, MD
Weight Loss Surgery: What You Need to Know
Obesity Can Have Implications Specific to Women | UCLA Vital Signs


  • Arnold P. Gold Foundation's Humanism and Excellence in Teaching Award