Brent Hiramoto, MD, MPH

Assistant Professor of Clinical Medicine

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Overview

Dr. Brent Hiramoto is a gastroenterologist specializing in the treatment of esophageal reflux and motility disorders, eosinophilic esophagitis, anorectal disorders such as fecal incontinence and chronic constipation, and other diverse disorders of gastrointestinal motility and gut-brain interaction. His clinical research interests focus on obesity epidemiology and the effect of obesity on the spectrum of foregut and hindgut motility disorders. He has published in several peer-reviewed journals including Gastroenterology, Clinical Gastroenterology and Hepatology, The American Journal of Gastroenterology, and Alimentary Pharmacology & Therapeutics.

He is a graduate of Northwestern University Feinberg School of Medicine where he obtained his MD. He then completed his residency training at the University of Southern California/Los Angeles General Medical Center. After residency he pursued his fellowship training in gastroenterology as a National Institute of Health (NIH) T32 fellow at the Brigham and Women’s Hospital, a teaching hospital of Harvard Medical School. He completed his MPH at the Harvard T.H. Chan School of Public Health during his fellowship training. He is excited to return to Los Angeles where he plans to pursue his interests in research, teaching, and patient-centered care.

Awards

  • University of California, Davis: Summa Cum Laude, 2013
  • National Institutes of Health: NIH T32 National Research Service Award, 2023
     – 2024
  • American Foregut Society: AFS Outstanding Trainee Award, 2024
  • American Gastroenterological Association: AGA Fellow Abstract Award, 2024

Education and Training

  • University of California, Davis, Davis, CA — BS — Cell Biology
  • Northwestern University Feinberg School of Medicine, Chicago, IL — MD — Medicine
  • Harvard T.H. Chan School of Public Health, Boston, MA — MPH — Clinical Effectiveness
  • University of Southern California/Los Angeles General Medical Center, Los Angeles, CA — Internal Medicine
  • Brigham and Women's Hospital, Boston, MA — Gastroenterology, Hepatology, and Endoscopy

Publications

  • Urban Residency is Independently Associated With Allergic Phenotype and Inflammatory Changes in Eosinophilic Esophagitis. J Clin Gastroenterol. 2026 08 01; 60(7):613-618.. View in PubMed
  • Asthma, COPD, and Fecal Incontinence: Connecting the Top to the Bottom Across the Diaphragm. Dig Dis Sci. 2026 Jul; 71(7):2652-2654.. View in PubMed
  • The Aging Esophagus: Contraction Reserve on High-Resolution Manometry Declines With Age. Neurogastroenterol Motil. 2026 May; 38(5):e70356.. View in PubMed
  • Association of Coffee Intake With Risk of Gastroesophageal Reflux Disease and Complications: A Systematic Review and Meta-Analysis. Clin Transl Gastroenterol. 2026 Apr 01; 17(4):e00996.. View in PubMed
  • Association of Foregut Testing and Intervention on Lung Transplant Outcomes. J Clin Gastroenterol. 2026 Mar 18.. View in PubMed
  • Predicting New-onset Diabetes Following Acute Pancreatitis: The CAPS Score. Pancreas. 2026 01 01; 55(1):e70-e74.. View in PubMed
  • Functional Lumen Imaging Probe Predictors of Esophageal Clearance in Symptomatic Postfundoplication Patients: Opening Diameter Has Greater Value Than Distensibility Index. Clin Transl Gastroenterol. 2025 Dec 01; 16(12):e00922.. View in PubMed
  • Distribution of Esophageal Eosinophilia as a Predictor of Proton Pump Inhibitor Response in Eosinophilic Esophagitis. Clin Gastroenterol Hepatol. 2026 Feb; 24(2):375-384.e3.. View in PubMed
  • Looking Beyond the Barrier for Fecal Incontinence: The Brain-Gut Axis and Central Neurosensory Processes as Treatment Targets. Dig Dis Sci. 2025 Sep; 70(9):2937-2939.. View in PubMed
  • Low Utility of Routine Thyroid Function Testing for Bowel Symptoms: A Population-Based Assessment. Dig Dis Sci. 2025 Mar; 70(3):1142-1149.. View in PubMed