Olaya Isabella Brewer Gutierrez, M.B.B.S.

Headshot of Olaya Isabella Brewer Gutierrez
  • Director of Endoscopy, Sibley Memorial Hospital
  • Assistant Professor of Medicine

Languages: English, Spanish


Barrett's Esophagus, Bile Duct Disease, Burping Belching, Chest Pain, Colon Polyps, Dysphagia, Endoscopic Retrograde Cholangiopancreatography, Endoscopic Ultrasound, Gastroesophageal Reflux Disease (GERD), Heartburn, Hiatal Hernia, Pancreatobiliary Diseases, Reflux and Burning, Swallowing Disorders, Therapeutic Endoscopy, Transoral Incisionless Fundoplications (TIF) ...read more

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Sibley Medical Building

Appointment Phone: 410-933-7495
5215 Loughboro Road NW
Suite 300
Washington, DC 20016
Sibley Medical Building - Google Maps


Gastroenterologist Olaya Brewer Gutierrez has expertise in the diagnosis and management of patients with gastroesophageal reflux disease (GERD) and Barrett’s esophagus. She specializes in anti-reflux procedures such as transoral incisionless fundoplication (TIF), pancreatobiliary diseases, endoscopic mucosal resection, endoscopic ultrasound and endoscopic retrograde cholangiopancreatography (ERCP).

Dr. Brewer Gutierrez received her medical degree from the Central University of Venezuela in Caracas where she completed an internal medicine residency followed by a gastroenterology fellowship. She then completed one year of endoscopic ultrasound training in Venezuela. She worked as an attending gastroenterologist at the Centro Medico Docente La Trinidad in Caracas for seven years.

Dr. Brewer Gutierrez completed a two-year advanced fellowship in endoscopic ultrasound and ERCP, followed by an additional year of motility training at Johns Hopkins. She is certified in general internal medicine and gastroenterology by the Medical College of the Federal District of Venezuela and is part of the Venezuelan Societies of Internal Medicine and Gastroenterology, where she also served in leadership roles over several years.

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  • Director of Endoscopy, Sibley Memorial Hospital
  • Director, Johns Hopkins Heartburn Center
  • Assistant Professor of Medicine

Departments / Divisions



  • MBBS; Universidad Central De Venezuela (2001)


  • Internal Medicine; Hospital Miguel Perez Carreno (2005)
  • Gastroenterology; Hospital Oncologico Padre Machado (2007)


  • Centro Medico Docente La Trinidad (2009)
  • Gastroenterology; Johns Hopkins University School of Medicine (2018)
  • Gastrointestinal Motility and Neurogastroenterology; Johns Hopkins University School of Medicine (2019)

Research & Publications

Research Summary

Dr. Brewer Gutierrez's research interests include gastroesophageal reflux disease and antireflux interventions in the general population as well as in the obese and post bariatric surgery population. Other areas of interests include esophageal dysphagia, pancreatobiliary disease and cholangioscopy.

Selected Publications

Dbouk M, Brewer Gutierrez OI, Kannadath BS, Camilion JV, Ngamruengphong S, Kumbhari V, Khashab M, Murray M, Janu P, Ihde G, Chang K, Thosani N, Canto MI. The learning curve for transoral incisionless fundoplication. Endosc Int Open. 2021 Nov 12;9(11):E1785-E1791

Brewer Gutierrez OI, Chang KJ, Benias PC, Sedarat A, Dbouk MH, Godoy Brewer G, Lee DP, Okolo Iii PI, Canto MI, Khashab MA. Is transoral incisionless fundoplication (TIF) an answer to post-peroral endoscopic myotomy gastroesophageal reflux? A multicenter retrospective study. Endoscopy 2022 Mar;54(3):305-309

Brewer Gutierrez OI, Moran RA, Familiari P, Dbouk MH, Costamagna G, Ichkhanian Y, Seewald S, Bapaye A, Cho JY, Barret M, Eleftheriadis N, Pioche M, Hayee BH, Tantau M, Ujiki M, Landi R, Invernizzi M, Yoo IK, Roman S, Haji A, Hedberg HM, Parsa N, Mion F, Fayad L, Kumbhari V, Agarwalla A, Ngamruengphong S, Sanaei O, Ponchon T, Khashab MA. Long-term outcomes of per-oral endoscopic myotomy in achalasia patients with a minimum follow-up of 4 years: a multicenter study. Endosc Int Open. 2020 May;8(5):E650-E655.

Brewer Gutierrez OI, Bekkali NLH, Raijman I, Sturgess R, Sejpal DV, Aridi HD, Sherman S, Shah RJ, Kwon RS, Buxbaum JL, Zulli C, Wassef W, Adler DG, Kushnir V, Wang AY, Krishnan K, Kaul V, Tzimas D, DiMaio CJ, Ho S, Petersen B, Moon JH, Elmunzer BJ, Webster GJM, Chen YI, Dwyer LK, Inamdar S, Patrick VB, Attwell A, Hosmer A, Ko C, Maurano A, Sarkar A, Taylor LJ, Gregory MH, Strand DS, Raza A, Kothari S, Harris JP, Kumta NA, Manvar A, Topazian MD, Lee YN, Spiceland CM, Trindade AJ, Bukhari MA, Sanaei O, Ngamruengphong S, Khashab MA. Efficacy and Safety of Digital Single-Operator Cholangioscopy for Difficult Biliary Stones. Clin Gastroenterol Hepatol. 2018 Jun;16(6):918-926

Brewer Gutierrez OI, Raijman I, Shah RJ, Elmunzer BJ, Webster GJM, Pleskow D, Sherman S, Sturgess RP, Sejpal DV, Ko C, Maurano A, Adler DG, Mullady DK, Strand DS, DiMaio CJ, Piraka C, Sharahia R, Dbouk MH, Han S, Spiceland CM, Bekkali NLH, Gabr M, Bick B, Dwyer LK, Han D, Buxbaum J, Zulli C, Cosgrove N, Wang AY, Carr-Locke D, Kerdsirichairat T, Aridi HD, Moran R, Shah S, Yang J, Sanaei O, Parsa N, Kumbhari V, Singh VK, Khashab MA. Safety and efficacy of digital single-operator pancreatoscopy for obstructing pancreatic ductal stones. Endosc Int Open 2019 Jul;7(7):E896-E903

Activities & Honors


  • Selected as one of the 2022 “Top Doctors” in Gastroenterology by Baltimore Magazine
  • Appointed as the American Society of Gastrointestinal Endoscopy LATAM Special Interest Group Vice Chair, 2022-2024
  • Kenner Family Award, Best abstract in early detection of pancreatic ductal adenocarcinoma. American Pancreatic Association 2019, Maui, Hawaii.
  • First place in the American Society of Gastrointestinal Endoscopy World Cup, Digestive Disease Week, San Diego, 2019
  • “Best of the best” award. This is an award given by the American Society of Gastrointestinal Endoscopy to the very best endoscopic video presented at the Digestive Disease Week in San Diego, 2019
  • Top reviewer award, Gastrointestinal Endoscopy Journal, 2018


  • American Gastroenterology Association (AGA)
  • American Society of Gastrointestinal Endoscopy (ASGE)
  • American College of Gastroenterology (ACG)
  • American Foregut Society (ASF)
  • Member of the Latin American Club of Endoscopic Ultrasound
  • Member of the Venezuelan Society of Gastroenterology
  • Member of the Venezuelan Society of Gastrointestinal Endoscopy

Videos & Media

Concomitant Transoral Incisionless Fundoplication: An Innovative Anti-reflux Procedure

Recent News Articles and Media Coverage

Endoscopic Ultrasound Measures Pressure in Hepatic Portal Vein, Hopkins Medicine News & Publications, (Fall, 2021)

New Procedure for Gastroesophageal Reflux Disease May Yield Improved Outcomes for Certain Patients, Johns Hopkins Medicine News & Publications (12/02/2022)

A Woman's Journey: Insights that Matter Gastroesophageal Reflux Disease (GERD), (04/04/2020)

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