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Ertan Digestive Disease Center Affiliated Physicians

Atilla Ertan, M.D., FACP, MACG, AGAF
Director, Ertan Digestive Disease Center, Gastroenterology Center of Excellence, Memorial Hermann-TMC, Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UT Health Medical School
Medical School: University of Ankara Medical School, Turkey
Residency: University of Ankara Medical School, Turkey
Fellowship: Hospital of the University of Pennsylvania


Michael Fallon, M.D.
Chief of Service, Gastroenterology and Hepatology, Memorial Hermann-TMC, Director and Professor, Division of Gastroenterology, Hepatology and Nutrition Department of Internal Medicine, UT Health Medical School
Medical School: University of Virginia School of Medicine
Residency: Yale-New Haven Hospital
Fellowship: Yale University School of Medicine
Additional Fellowship: Transplant Hepatology, University of Alabama at Birmingham


Marc F. Catalano, M.D.Marc F. Catalano, M.D.
Professor, Division of Gastroenterology, Hepatology and Nutrition
Department of Internal Medicine, UTHealth Medical School
Medical School: UTHealth Medical School
Residency: UTHealth Medical School
Fellowship: UTHealth Medical School
Additional Fellowship: Advanced Endoscopy, Cleveland Clinic


Larry Scott, M.D.
Professor, Division of Gastroenterology, Hepatology and Nutrition
Department of Internal Medicine, UT Health Medical School
Medical School: Vanderbilt University
Residency: Vanderbilt University
Fellowship: University of Iowa


Andrew W. DuPont, M.D., M.S.P.H.
Associate Professor, Director of Clinical Investigation in Gastroenterology, Gastroenterology Fellowship Program Director, Director of the Inflammatory Bowel Disease Program, Division of Gastroenterology, Hepatology and Nutrition Department of Internal Medicine, UTHealth Medical School and Ertan Digestive Disease Center
Medical School: UTHealth Medical School
Internal Medicine Residency: University of Alabama in Birmingham
Fellowship: University of Alabama in Birmingham


Keith Fernandez,  M.D.D. Keith Fernandez, M.D.
Adjunct Clinical Professor, Department of Internal Medicine, UTHealth Medical School
President and Physician-in-chief, MHMD Memorial Hermann Physician Network, Chief Medical Officer, Memorial Hermann Accountable Care Organization
Medical School: Uniformed Services University of the Health Sciences
Residency: David Grant Medical Center
Fellowship: Wilford Hall Medical Center


Sushovan Guha, M.D., Ph.D.
Associate Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School, Director of Gastroenterology and Hepatology Outcomes Program at Ertan Digestive Disease Center
Medical School: JIPMER, University of Madras, India
Residency: Albert Einstein College of Medicine Affiliated Hospitals
Fellowship: University of California, Los Angeles

Dr. Nancy BehazinNancy Behazin, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition
Department of Internal Medicine, UTHealth Medical School
Medical School: Texas Tech University Health Sciences Center
Residency: Baylor College of Medicine
Fellowship: Texas A&M Health Science Center


Jennifer Shroff, M.D.Jennifer Shroff, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition
Department of Internal Medicine, UTHealth Medical School
Medical School: University of Illinois at Chicago College of Medicine
Residency: Washington University
Fellowship: UTHealth Medical School


Shashideep Singhal, M.D.Shashideep Singhal, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition
Department of Internal Medicine, UTHealth Medical School
Medical School: University of Delhi
Residency: Chicago Medical School at Rosalind Franklin University
Fellowship: New York Presbyterian Healthcare System


Nirav Thosani, M.D.Nirav C. Thosani, M.D.
Assistant Professor, Director of Advanced Therapeutic Endoscopy
Ertan Digestive Disease Center, Memorial Hermann-TMC, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School
Medical School: Gujarat University, India
Residency: UTHealth Medical School
Fellowship: UTHealth Medical School
Additional Fellowship: Advanced Endoscopy, Stanford University


Hani Abdallah Zamil, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Director of Gastrointestinal Motility and Physiology Program at Ertan Digestive Disease Center, UTHealth Medical School
Medical School: University of Jordan
Residency: Brown Medical School
Fellowship: Harvard Medical School
Additional Fellowship: Advanced Endoscopy, Harvard Medical School


J. Steve Bynon, Jr., M.D., F.A.C.S.
Chief of Abdominal Transplant, Memorial Hermann-TMC, Director and Professor of Immunology & Organ Transplant, Division of Immunology & Organ Transplantation Department of Surgery, UTHealth Medical School
Medical School: The University of Tennessee School of Medicine
Residency: The University of Alabama at Birmingham School of Medicine
Fellowship: The University of Nebraska College of Medicine


Victor Machicao, M.D.
Associate Professor, Medical Director, Texas Liver Center, Memorial Hermann-TMC, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School
Medical School: Universidad Peruana Cayetano Heredia School of Medicine, Peru
Residency: Cleveland Clinic Foundation
Fellowship: Mayo Clinic
Additional Fellowship: Transplant Hepatology


Wasim Dar, M.D., Ph.D.
Assistant Professor, Division of Immunology & Organ transplantation, Department of Surgery, UTHealth Medical School
Medical School: Case Western Reserve University School of Medicine
Residency: University of Wisconsin Hospitals and Clinics
Fellowship: Emory University Hospitals


Dr. Kevin DasherKevin Dasher, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School
Medical School: University of Texas Medical School at Houston
Residency: University of Wisconsin Hospital and Clinics
Fellowship: John Hopkins, Baltimore
Additional Fellowship: Transplant Hepatology, Baylor University Medical Center


Mark J. Hobeika, M.D.
Assistant Professor, Division of Immunology & Organ Transplantation, Department of Surgery, UTHealth Medical School
Medical School: Virginia Commonwealth University / Medical College of Virginia School of Medicine
Residency: New York University School of Medicine
Fellowship: University of California, San Francisco


Moises Ilan Nevah, M.D.Moises I. Nevah Rubin, M.D.
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School
Medical School: University of Panama, Republic of Panama
Residency: St. Luke's Roosevelt Hospital Center, New York
Fellowship: UTHealth Medical School
Additional Fellowship: Transplant Hepatology, University of California in San Francisco


Jen-Jung Pan, M.D.Jen-Jung Pan, M.D., PhD
Assistant Professor, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, UTHealth Medical School
Medical School: National Yang Ming University, Taipei, Taiwan
Residency: State University of New York at buffalo
Fellowship: Transplant Hepatology, University of Florida


Nishan AsharyNishan Ashary, M.D.
Assistant Professor, Director of outside locations Department of Anesthesiology, Division of Ambulatory Anesthesiology, ENT Anesthesiology and Orthopedic Anesthesiology, Department of Anesthesiology, UTHealth Medical School
Medical School: Dow Medical College, Dow university Karachi, Pakistan
Residency in Anesthesiology: Texas Tech University Health Sciences Center
Fellowships: Cardiovascular Anesthesiology, Texas Heart Institute
Critical Care Fellowship, University of Texas Houston


YounesMamoun Younes, M.D.
Professor, Division of Gastrointestinal and Liver Pathology Department of Pathology and Laboratory Medicine, Director of Gastrointestinal and Liver Pathology Service, at Ertan Digestive Disease Center, UTHealth Medical School
Medical School: Aleppo University Faculty of Medicine, Syria
Residency: Yale University
Fellowship: Baylor College of Medicine