Lin Chang, MD

Lin Chang, MD

Accepting new patients
Primary Location
Westwood Digestive Diseases
100 Medical Plaza
Suite 205
Los Angeles, California 90024


  • 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

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 disorders of gut-brain interactions 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, vice-chief of the Vatche and Tamar Manoukian Division of Digestive Diseases at UCLA and program director of the UCLA Gastroenterology Fellowship Program. Dr. Chang is a recipient of the Janssen Award in Gastroenterology for Basic or Clinical Research, AGA Distinguished Clinician Award, and AGA Distinguished Educator Award. She has authored more than 150 original research articles, 60 review articles and 29 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 and previously served as clinical research councilor of the American Gastroenterological Association (AGA) Governing Board and president of the American Neurogastroenterology and Motility Society (ANMS). She also serves as Associate Editor of the journal, Gastroenterology. She is a fellow of the 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


UCLA School of Medicine, 1992


Harbor - UCLA Medical Center, 1989


Harbor - UCLA Medical Center, 1987


UCLA School of Medicine, MD, 1986


Hospital Affiliations

Ronald Reagan UCLA Medical Center

Areas of Focus

Irritable bowel syndrome
Functional gastrointestinal disorders


"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
Nausea and vomiting: CVS and CHS
A patient with chronic dyspepsia
Functional GI: Dietary management, ARFI disorder, chronic abdominal pain
Functional GI: Non-pharm treatment, diaphragmatic breathing, behavioral therapies
Functional bowel disease
Rome IV for funcational GI disorders
IBS: New therapies
Defecation disorders



  • Irritable bowel syndrome (IBS)
  • Functional bowel disorders


  • Best Doctors in America - 2021, 2020, 2019
  • Super Doctors® Southern California - 2022, 2021, 2020, 2019
  • Janssen Award in Gastroenterology for Basic or Clinical Research
  • AGA Distinguished Clinician Award
  • AGA Distinguished Educator Award