Alberto Oswaldo Barroso, MD

Associate Professor of Clinical Medicine, Institute for Academic Medicine
Houston Methodist
Weill Cornell Medical College


Alberto O. Barroso is an Associate Professor of Medicine in the Division of Gastroenterology and Hepatology, Department of Internal Medicine, Weill Cornell Medical College, in Houston, Texas.

He graduated from the Federal University Medical School at Rio de Janeiro, in December 1966. After two years of post-graduate training at the Hospital de Ipanema in Rio, he practiced Internal Medicine with particular interest in the pre and post-operative management of the critically ill surgical patient. This gave him the opportunity of introducing Intravenous Nutritional Support to the surgical patient.

Dr. Barroso was one of the pioneers in introducing Total Parenteral Nutrition in Brazil, being one of the Founders of the Brazilian Society of Parenteral Nutrition, serving as the first ever Secretary, then President Elect. He resigned the position of President in order to travel to Houston, to join the Department of Surgery at the University of Texas Medical School at Houston, as Assistant Professor of Medicine and Surgery, where he participated in the development of the Home Parenteral Nutrition Program in 1980-1981.

In 1981 he was accepted in the GI Fellowship Program at Baylor College of Medicine in Houston. After the two years of training, he joined the Full Time Faculty at Baylor College of Medicine, being actively involved in developing a Nutritional Support Clinical Service, as well as participating in the training of new GI Fellows. He has always been actively involved in teaching medical students, Internal Medicine Residents and GI Fellows, throughout his whole career.

In 1987 he left the Full Time Faculty position at the Medical School, in order to open his Office for the Private Practice of Gastroenterology. He continued to participate, however, in the teaching of Medical Students, Residents and GI Fellows at the Houston Methodist Hospital.

In May of 2013, he closed his Office for Private Practice, and joined the Physician Organization at the Houston Methodist Hospital, as Associate Professor of Clinical Medicine, in the GI Division of the Internal Medicine Department.

Dr. Barroso is a member of numerous professional societies, and numerous Medical Staff Committees at the Houston Methodist Hospital. He is the Elected Deputy Chair of the Internal Medicine Department since 2011, being re-elected in 2012 and again in 2015 for another three year term. He is also the Associate Program Director for the GI Fellowship Program at the Houston Methodist Hospital since the beginning of the Program, in 2014. He is also the Course Administrator for the weekly Multidisciplinary Gastrointestinal Conference, which is the longest continuously running clinical conference at the Houston Methodist Hospital for over 40 years. He also holds an appointment as Adjunct Associate Professor of Medicine at the MD Anderson Cancer Center Division of Gastroenterology, Hepatology and Nutrition.

Areas Of Expertise

Therapeutic Interventional Endoscopy ERCP Endoscopic Ultrasound Endoscopic Mucosal Resection Radiofrequency Ablation Enteroscopy Percutaneous Endoscopic Gastrostomy Gastro-Esophageal Reflux Barrett's Esophagus Pancreatico-Biliary disorders
Education & Training

, Baylor College of Medicine
, Memorial Hospital at Gulfport
, Faculdade De Medicina Da Univ.

Diverticula and diverticulitis: Time for a reappraisal
Barroso, AO & Quigley, EMM 2015, Gastroenterology and Hepatology, vol 11, no. 10, pp. 680-688.

Points to remember: gastrointestinal pearls for the cardiovascular clinician
Barroso, AO 2015, Methodist DeBakey Cardiovascular Journal, vol 11, no. 1, pp. 65. DOI:

A rare case of gastric fundic gland adenocarcinoma (chief cell predominant type)
Chen, WC, Rodriguez-Waitkus, PM, Barroso, A, Balsaver, A & McKechnie, JC 2012, Journal of Gastrointestinal Cancer, vol 43, no. SUPPL. 1. DOI:

Advanced endoscopy procedures in private practice: Is the juice worth the squeeze?
Barroso, AO 2011, Gastrointestinal Endoscopy, vol 74, no. 4, pp. 913-915. DOI:

The significance of "indefinite for dysplasia" grading in Barrett metaplasia
Younes, M, Lauwers, GY, Ertan, A, Ergun, G, Verm, R, Bridges, M, Woods, K, Meriano, F, Schmulen, C, Johnson, C, Barroso, A, Schwartz, J, McKechnie, J & Lechago, J 2011, Archives of Pathology and Laboratory Medicine, vol 135, no. 4, pp. 430-432.

Utility of Removable Esophageal Covered Self-Expanding Metal Stents for Leak and Fistula Management
Blackmon, SH, Santora, R, Schwarz, P, Barroso, A & Dunkin, BJ 2010, Annals of Thoracic Surgery, vol 89, no. 3, pp. 931-937. DOI:

Goblet cell mimickers in esophageal biopsies are not associated with an increased risk for dysplasia
Younes, M, Ertan, A, Ergun, G, Verm, R, Bridges, M, Woods, K, Meriano, F, Schmulen, AC, Colman, R, Johnson, C, Barroso, A, Schwartz, J, McKechnie, J & Lechago, J 2007, Archives of Pathology and Laboratory Medicine, vol 131, no. 4, pp. 571-575.

Grand rounds in gastroenterology from Baylor College of Medicine - A 46-year-old woman with confusion and syncope
Medrano, M, Barroso, A & Goodgame, R 2004, . in MedGenMed Medscape General Medicine. 3 edn, vol. 6.

A 46-year-old woman with confusion and syncope.
Medrano, M, Barroso, A & Goodgame, R 2004, MedGenMed [electronic resource] : Medscape general medicine., vol 6, no. 3.

Gastric carcinoids in patients with hypergastrinemia
Jordan, PH, Barroso, A & Sweeney, J 2004, Journal of the American College of Surgeons, vol 199, no. 4, pp. 552-555. DOI:

Rectal duplication cyst in an adult: The laparoscopic approach
Salameh, JR, Votanopoulos, KI, Hilal, RE, Essien, FA, Williams, MD, Barroso, AO, Sweeney, JF & Brunicardi, FC 2002, Journal of Laparoendoscopic and Advanced Surgical Techniques - Part A, vol 12, no. 6, pp. 453-456.

Relationship between dysplasia, p53 protein accumulation, DNA ploidy, and Glut1 overexpression in Barrett metaplasia
Younes, M, Lechago, J, Chakraborty, S, Ostrowski, M, Bridges, M, Meriano, F, Solcher, D, Barroso, A, Whitman, D, Schwartz, J, Johnson, C, Schmulen, AC, Verm, R, Balsaver, A, Carlson, N & Ertant, A 2000, Scandinavian Journal of Gastroenterology, vol 35, no. 2, pp. 131-137.

Documentation of fluoroscopic and endoscopic images using a color video printer
Stroehlein, JR, Barroso, A, Glombicki, A & Sachs, I 1990, Gastrointestinal Endoscopy, vol 36, no. 4, pp. 392-394.

No demonstration of gallbladder motility disorder
Barroso, AO 1987, Gastroenterology, vol 92, no. 3.

Repeated balloon dilation of a severe colonic stricture
Barroso, AO, Azizi, E, Jordan, G & Alpert, E 1987, Gastrointestinal Endoscopy, vol 33, no. 4, pp. 320-322.