Yijun Chen, MD

Reported procedures

• Gastric bypass Source ↗
• gastric sleeve Source ↗
• revision Source ↗
• LAP-band removal Source ↗

Source-reported information; confirm current details directly.

Reported credentials

• American Board of Surgery Source ↗
• Surgery Source ↗

Source-reported information; confirm current details directly.

Reported affiliations

• UCLA medical centers Source ↗
• UCLA ASSOCIATED GENERAL SURGEONS Source ↗

Source-reported information; confirm current details directly.

Selected publications

• National trends and outcomes of robotic and laparoscopic bariatric surgery in the United States. · 2026 Source ↗
• Patterns of Emotional Eating Changes After Sleeve Gastrectomy. · 2026 Source ↗
• Incidence and Predictors of Suboptimal Early Weight Loss after Bariatric Procedures. · 2026 Source ↗
• Association of metabolic and bariatric surgery and risk of cognitive impairment among U.S. adults. · 2026 Source ↗
• Psychiatric morbidity after bariatric surgery and its association with postoperative body mass index: a national analysis. · 2026 Source ↗
• Improvement in breathlessness following bariatric surgery as measured by a new heart failure-specific health-related quality of life instrument: a prospective longitudinal study. · 2026 Source ↗
• Potential for error when relying on administrative data. · 2025 Source ↗
• The Association Between Grit and Weight Loss After Metabolic and Bariatric Surgery. · 2024 Source ↗
• Bariatric-induced microbiome changes alter MASLD development in association with changes in the innate immune system. · 2024 Source ↗
• Association of Pneumatosis Intestinalis With Surgical Outcomes and Mortality: A Matched, Retrospective Cohort Study and Literature Review. · 2024 Source ↗
• Generalizability of Randomized Clinical Trial Outcomes for Diabetes Control Resulting From Bariatric Surgery. · 2024 Source ↗
• Microbial changes from bariatric surgery alters glucose-dependent insulinotropic polypeptide and prevents fatty liver disease. · 2023 Source ↗
• Incidence and risk factors for early gastrojejunostomy anastomotic stricture requiring endoscopic intervention following laparoscopic Roux-en-Y gastric bypass: a MBSAQIP analysis. · 2022 Source ↗
• Risk factors for readmission for early small bowel obstruction following laparoscopic Roux-en-Y gastric bypass: an MBSAQIP analysis. · 2021 Source ↗
• Analysis of Early Job Market Experiences and Perceptions Among Bariatric Surgery Fellowship Graduates and Bariatric Surgery Program Directors. · 2021 Source ↗
• Improvement in Uncontrolled Eating Behavior after Laparoscopic Sleeve Gastrectomy Is Associated with Alterations in the Brain-Gut-Microbiome Axis in Obese Women. · 2020 Source ↗
• Primary Care Treatment of Patients Following Bariatric Surgery in 2020. · 2020 Source ↗
• Indications, Operative Techniques, and Outcomes for Revisional Operation Following Mini-Gastric Bypass-One Anastomosis Gastric Bypass: a Systematic Review. · 2020 Source ↗
• Vertical Sleeve Gastrectomy Attenuates the Progression of Non-Alcoholic Steatohepatitis in Mice on a High-Fat High-Cholesterol Diet. · 2019 Source ↗
• Short- and intermediate-term clinical outcome comparison between laparoscopic and robotic-assisted median arcuate ligament release. · 2020 Source ↗
• Postoperative Care Fragmentation Is Associated with Increased 30-Day Mortality after Bariatric Surgery. · 2018 Source ↗
• Obesity Is Associated with Early Onset of Gastrointestinal Cancers in California. · 2018 Source ↗
• Robotic-assisted laparoscopic median arcuate ligament release: 7-year experience from a single tertiary care center. · 2018 Source ↗
• Efficacy of video-based education program in improving metabolic surgery perception among patients with obesity and diabetes. · 2018 Source ↗
• Strategies to Prevent Obesity-Related Cancer. · 2018 Source ↗
• Comment on: impact of bariatric surgery on outcomes of patients with nonalcoholic fatty liver disease: a nationwide inpatient sample analysis, 2004-2012. · 2018 Source ↗
• Cost analysis and risk factors for interval cholecystectomy after bariatric surgery: a national study. · 2018 Source ↗
• Gastric Bypass Surgery Leads to Long-term Remission or Improvement of Type 2 Diabetes and Significant Decrease of Microvascular and Macrovascular Complications. · 2016 Source ↗

Source-reported information; confirm current details directly.

Professional identifier

NPI: 1285860023

Insurance reported

Aetna

Anthem Blue Cross

Blue Shield of California

Centivo

Cigna

First Health

Health Net of California

Interplan (part of HealthSmart)

L.A. Care

Medicare Advantage

Multiplan

Prime Health Services

Private Healthcare Systems (PHCS)

Tricare

UFCM Health System

UnitedHealthcare

Reported in source records. Confirm the exact plan, network and procedure with the practice and insurer. Logos identify brands; they do not establish participation.