Lin Chang

Lin Chang, MD

Primary Location
Westwood Digestive Diseases
100 Medical Plaza
Los Angeles, California 90024


Lin Chang, MD
Vice Chief, Vatche and Tamar Manoukian Division of Digestive Diseases
Program Director, UCLA GI Fellowship Program
Co-Director, G. Oppenheimer Center for Neurobiology of Stress and Resilience
Professor of Medicine
David Geffen School of Medicine at UCLA

Dr. Chang earned her medical degree from the UCLA School of Medicine and completed her internship and residency in internal medicine at Harbor-UCLA Medical Center. She completed her gastroenterology fellowship training at the UCLA affiliated training program in gastroenterology. Dr. Chang's clinical expertise is in functional gastrointestinal disorders which include irritable bowel syndrome (IBS), chronic constipation and functional dyspepsia. Her research is focused on the pathophysiology of IBS related to stress, sex differences, genetic and epigenetic factors, neuroendocrine alterations, and gut microbiome and the treatment of IBS. She is the co-director of the G. Oppenheimer Center for Neurobiology of Stress and Resilience. She is vice-chief of the Vatche and Tamar Manoukian Division of Digestive Diseases at UCLA. She is also the program director of the UCLA Gastroenterology Fellowship Program. Dr. Chang is a recipient of the Janssen Award in Gastroenterology for Basic or Clinical Research and the AGA Distinguished Clinician Award. She has authored more than 120 original research articles, 55 review articles, and 20 book chapters on her specialty interests and is a frequent speaker at national and international meetings. Active in professional organizations, she is a member of the Rome Foundation Board of Directors, serves as clinical research councilor of the AGA Governing Board, previously served as president of the American Neurogastroenterology and Motility Society (ANMS), and is a fellow of the American Gastroenterological Association (AGA) and American College of Gastroenterology (ACG).


Medical Board Certifications

Gastroenterology, American Board of Internal Medicine, 1993
Internal Medicine, American Board of Internal Medicine, 1989


Harbor - UCLA Medical Center, 1992


Harbor - UCLA Medical Center, 1989


Harbor - UCLA Medical Center, 1987


UCLA School of Medicine, MD, 1986

Hospital Affiliations

Ronald Reagan UCLA Medical Center


"What is irritable bowel syndrome or IBS?" | Irritable Bowel Syndrome
"What is the cause of IBS?" | Irritable Bowel Syndrome
"How is IBS diagnosed?" | Irritable Bowel Syndrome
"How is IBS treated?" | Irritable Bowel Syndrome
A Patient with Chronic Dyspepsia | Lin Chang, MD | UCLA Digestive Diseases
Functional GI: Dietary Management, ARFI Disorder, Chronic Abdominal Pain | UCLA Digestive Diseases
Functional GI: Non-Pharm Treatment, Diaphragmatic Breathing, Behavioral Therapies
Functional Bowel Disease | UCLA Digestive Diseases
What’s New with Rome IV for Functional GI Disorders
IBS – New Therapies: Is There Hope Down the Road?
Defecation Disorders: Constipation and Incontinence
Chronic Nausea and Vomiting - Causes and Remedies



  • Irritable Bowel Syndrome
  • Functional Bowel Disorders


Link to my PubMed publications >

Dr. Chang is Co-Director of the G Oppenheimer Center for Neurobiology of Stress and Resilience which is a NIH funded research center that focuses on brain-gut interactions and chronic visceral pain disorders. She has been performing clinical and translational research studies in functional gastrointestinal disorders such as irritable bowel syndrome (IBS) for over 25 years. Her research has focused on brain-gut interactions, specifically pathophysiologic mechanisms, sex and gender differences, role of stress and early adverse life events, epigenetic factors, clinical symptoms, health outcomes, and treatment in IBS. She has received research funding from the National Institutes of Health, foundations and industry.