Amber Charoen, M.D.

Headshot of Amber Charoen
  • Assistant Professor of Medicine

Languages: English, Thai


Celiac Disease, Colorectal Cancer Screening, Short Bowel Syndrome more


The Johns Hopkins Hospital

600 N. Wolfe Street
Baltimore, MD 21287 map
Phone: 410-550-6055 | Fax: 410-367-3011

Johns Hopkins Gastroenterology and Hepatology - Howard County

Appointment Phone: 410-933-7495
5450 Knoll North Drive
Endoscopy & Surgery Center (GI Lab, Infusion Center): Suite 301
Columbia, MD 21045 map

Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 410-861-7678
601 N. Caroline St.
7th Floor
Baltimore, MD 21287 map

Johns Hopkins Health Care and Surgery Center

Appointment Phone: 410-933-7495
4924 Campbell Road
White Marsh, MD 21236 map


Dr. Amber Charoen is a gastroenterologist specializing in small bowel disease such as celiac disease, chronic diarrhea and malabsorption, and in management of nutritional disorders resulting from gastrointestinal problems such as short bowel syndrome and intestinal malabsorption. She has a special interest in using video capsule endoscopy in diagnosing problems of the small bowel such as bleeding, ulcers and tumors. She also treats patients who have general gastroenterology conditions including irritable bowel syndrome and chronic constipation, and she performs colon cancer screenings.

Dr. Charoen completed medical school at Rangsit University in Thailand. She obtained residency training in internal medicine at the MetroWest Medical Center/Tufts University School of Medicine in Framingham, Massachusetts, then completed a fellowship in gastroenterology at the Rhode Island Hospital/Brown University in Providence, Rhode Island.

Dr. Charoen’s translational research focuses on the applications of artificial intelligence in gastroenterology, especially regarding video capsule endoscopy with the goal to improve its efficiency and utility. Her clinical research focuses on celiac disease, short bowel syndrome and nutrition disorders. more


  • Assistant Professor of Medicine

Departments / Divisions



  • MD; Medicine; Rangsit University (2014)


  • Internal Medicine/Pediatrics; MetroWest Medical Center (2019)


  • Gastroenterology; Rhode Island Hospital (2022)

Board Certifications

  • American Board of Internal Medicine (Gastroenterology) (2022)
  • American Board of Internal Medicine (Internal Medicine) (2019)

Research & Publications

Selected Publications

Roldan GA, Jamot S, Kopec K, Charoen A, Leffler D, Feller ER, and Shah SA. Celiac Disease Presenting in a Community-Based Gastroenterology Practice: Obesity and Bone Disease Are Common. Dig Dis Sci. 2022 Jun 1.

Duangchai R, Toonmana C, Numpacharoen K, Wiwatwattana N, Charoen A, and Charoenpong T. Bleeding Region Segmentation in Wireless Capsule Endoscopy Images by a Deep Learning Model: Initial Learning Rate and Epoch Optimization. In2022 International Conference on Decision Aid Sciences and Applications (DASA) 2022 Mar 23 (pp. 1460-1463). IEEE.

Activities & Honors


  • Certificate of First Prize for Excellence in Pharmaceutical Science Study, Chulalongkorn University
  • Awards for Excellence in Anatomy, Microbiology , Pathology, Pharmacology, and Physiology, College of Medicine Rangsit University
  • Excellent Medical Graduate Award, Prince Mahidol Foundation
  • Award for Academic Excellence, College of Medicine, Rangsit University
  • Humanism Award, MetroWest Medical Center/Tufts University School of Medicine
  • Isadore Nathan Rosenberg, M.D. Clinical Research Award, MetroWest Medical Center/Tufts University School of Medicine
  • Poster of Distinction, Digestive Disease Week 2020
  • Poster of Distinction, Digestive Disease Week 2021
  • Dean's Excellence in Teaching Award,, The Warren Alpert Medical School of Brown University
  • Joseph D. DiMase Research Award, The Warren Alpert Medical School of Brown University


  • American Gastroenterological Association (AGA), 2019
  • American College of Gastroenterology (ACG), 2020
  • American Neurogastroenterology and Motility Society (ANMS), 2020
  • American Society for Gastrointestinal Endoscopy (ASGE), 2020

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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