Houston Methodist. Leading Medicine.
Houston Methodist. Leading Medicine


Faculty - Gastroenterology

Gulchin A. Ergun, MD, FACG (Subspecialty Education Coordinator) is the Medical Director of The Methodist Hospital Digestive Disease Department, Reflux Center & GI Physiology Lab and the Clinical Service Chief of Gastroenterology at The Methodist Hospital.  She is also a Clinical Associate Professor of Medicine at Weill-Cornell Medical College and Baylor College of Medicine. Dr. Ergun received her medical degree from Case Western Reserve University School of Medicine in Cleveland, Ohio.She completed her residency at the University Hospitals of Cleveland and did her fellowship in gastroenterology at the New York Hospital-Cornell Medical Center in New York City.After fellowship she joined the faculty at Northwestern University Medical School where she developed her interests in swallowing, gastroesophageal reflux disease and gastrointestinal motility disorders. Dr. Ergun was recruited to Houston in 1998 to join the faculty at Baylor College of Medicine and to start The Methodist Hospital Reflux Center. She has focused her academic interests on the pathophysiology of gastroesophageal reflux disease and extra esophageal complications of gastroesophageal reflux disease, such as reflux laryngitis and chronic cough. She has authored more than 50 journal articles and book chapters and she participates in numerous international and national professional organizations including the World Organization of Gastroenterology, American Gastroenterological Association, and American College of Gastroenterology and the American College of Physicians. She is board certificed in Internal Medicine and Gastroenterology.  

Alberto Barroso, MD received his medical degree, completed his internship & residency in Rio de Janeiro, Brazil. He went on to post-graduate training at Baylor College of Medicine in Houston, TX. He is Clinical Associate Professor, Division of Gastroenterology at Weill Cornell and the Elected Deputy Chief of Internal Medicine at The Methodist Hospital.  Dr. Barroso is currently board certified in Internal Medicine and Gastroenterology. Some of his current memberships include Fellow-American College of Gastroenterology, Fellow-American College of Physicians, Member-American Gastroenterological Association and Member-American Society for Gastrointestinal Endoscopy.



John C. McKechnie, MD, FACP, FACG is a graduate of Baylor College of Medicine.After Internal Medicine Residency, 3 years in the United States Army, a short time as a primary care physician in Appalachia and finishing training in Gastroenterology at Baylor, he entered the practice of Internal Medicine and Gastroenterology at The Methodist Hospital.He rapidly rose from Instructor to Clinical Professor at Baylor, receiving multiple awards for teaching.While Baylor and The Methodist Hospital were affiliated, Dr. McKechnie was in charge of the Gastroenterology teaching program.After Baylor and TMH separated, he was instrumental in developing the new Internal Medicine Residency at TMH, where he now serves as Associate Program Director.Dr. McKechnie is a Clinical Professor at Weill Cornell College of Medicine.He has been named to the Excellence in Teaching Hall of Fame at Baylor and named as Distinguished Clinician by the American Gastroenterology Association.  He recently received the Laureate Award by the Texas Chapter of the American College of Physicians.

Frank Meriano, MD

More information 

Eamonn M. M. Quigley, MD past president of the American College of Gastroenterology and the World Gastroenterology Organization, joined the faculty at The Methodist Hospital as head of its gastroenterology division. Dr. Quigley received his medical degree from  University College Cork in Cork, Ireland; completed internal medicine residency in Glasgow, Scotland; and did GI fellowship training at the Mayo Clinic and the University of Manchester in England.  He served as the Chief of Gastroenterology at the University of Nebraska from 1991 to 1998 and as Dean of the Medical School in Cork, Ireland from 2000 to 2007. He is internationally known for his research on gastrointestinal motility disorders, primarily irritable bowel syndrome (IBS); gastroesophageal reflux disease (GERD); neurogastroenterology (the relationship between the central nervous system and the gut); and probiotics in health and disease.  He has published more than 600 peer-reviewed articles, reviews, editorials, book chapters and case reports, mostly in the areas of gut motility, functional gastrointestinal disorders, and GERD. Quigley has received numerous international honors and awards. He served as Editor-in-Chief of the American Journal of Gastroenterology from 1997 to 2003.

David Richards, MD received his medical degree from Wayne State University School of Medicine in Detroit.  He completed his internship and residency training in Internal Medicine at The University of Texas Medical School at Houston.  He went on to complete fellowship training in Gastroenterology at The University of Texas Medical School at Houston and was named Chief Clinical Fellow for 2011-2012.  After a year of working in private practice in central Texas at Seton Medical Center Harker Heights, Dr. Richards joined the medical staff at The Methodist Hospital.  Dr. Richards is ABIM Board Certified in Internal Medicine and Gastroenterology and is a member of the Texas Medical Association, the Harris County Medical Society, the American College of Gastroenterology, and the American Gastroenterological Association.

Ian Sachs, MD received his medical degree from Northwestern University in Chicago. He completed his internship and residency at Baylor College of Medicine as well as his fellowship in Gastroenterology. Dr. Sachs is currently a Clinical Associate Professor at Weill Cornell College of Medicine and a Clinical Associate Professor of Medicine at Baylor.  He is board certified in Internal Medicine, gastroenterology and is a diplomat with the National Board of Medical Examiners.

Peter Schwarz, MD

More information


Matthew Tompson, MD received an undergraduate degree in Chemistry from Washington & Lee University in Virginia. He attended medical school and residency at UT Houston. After serving as Chief Medical Resident for a year at UT Houston, Dr. Tompson went on to his GI fellowship at UT Southwestern in Dallas. He is currently board certified in gastroenterology.