Education & Training

Medical School

Akdeniz University Faculty of Medicine


Internal Medicine

  • Istanbul Universitesi



  • University of Iowa


American Board of Internal Medicine


MU Health Care participates with most major managed care organizations. To find out whether MU Health Care is a participating provider in your insurance plan or network, or for information on co-payments and deductibles, please contact your insurance carrier directly.

Academic Information

Assistant Professor of Clinical Medicine

Research Interests

  • Gastroesophageal reflux disease (GERD)
  • Gastrointestinal cancer
  • Gastrointestinal disorders
  • Gastrointestinal imaging
  • Inflammatory bowel diseases (IBD)
  • Upper endoscopy an colonoscopy
  • Enteral feeding
  • Hepatitis
  • Hepatology
  • Liver cancer
  • Liver disease

Areas of Expertise

  • General gastroenterology
  • Hepatology
  • Upper endoscopy
  • Colonoscopy
  • Capsule endoscopy
  • Push enteroscopy
  • Feeding tube placement

Awards & Honors

  • 2017 Mentor of American College of Gastroenterology (ACG) on Research Career, Academics, Clinical Career and Education Career.
  • 2016 “Faculty/Staff Advisor” for the University of Missouri Dialogue Club.
  • 2016 Fellow, American College of Gastroenterology (FACG)
  • 2015 White Tulip Health Foundation, “Young Academician Award”. Newark, NJ, USA.
  • 2015 Hepatologist MD of “Show Me ECHO- HCV” Project in Missouri State.
  • 2014 Grant Award for 2014 Fellow Advanced Endoscopy Programs. University of Colorado, Aurora, CO, USA.
  • 2006, 2007 and 2008: Turkish Nominee of ASNEMGE: European Rising Star in Gastroenterology.
  • 2009 Hepatogastroentrology Congress 'Poster Award'. Antalya, Turkey.
  • 2009 AASLD 'Presidential Poster of Distinction'. Boston, USA.
  • 2008 Istanbul Governor’s Science Award.
  • 2007 National Gastroenterology Week – Danone institution Oral Presentation Award. Nevşehir, Turkey.
  • 2006 Novartis: “Patient Relative Studies’ First Prize. İstanbul, Turkey.
  • 2006 EASL Best Abstracts/Registration Award. Vienna, Austria.
  • 2005 Full Bursary Award EASL 2005 Rosiglitazone Shows. Paris, France.
  • 2005 Presidential poster and poster of distinction. Montreal, Quebec, Canada.
  • 2005 Roche Viral Hepatitis Oral Presentation Second Prize. Swissotel, İstanbul.
  • 2004 'ODTU’ Dr. Mustafa Parlar Foundation Study Support Prize. Orta Dogu Teknik University, Ankara, Turkey.
  • 2004 National Gastrenterology Week – Oral presentation award. Antalya, Turkey.
  • 2003, 2004, 2005, 2006 - Marmara University International Study Awards. Istanbul, Turkey.
  • 2003 National Gastrenterology Week – Oral presentation award. Kuşadasi, Turkey.
  • 2003 Young Scientists-Clinicans Program Full Bursary Award. Cairo, Egypt.
  • 2001 Istanbul University International Study Award. Istanbul, Turkey.
  • 1999 ECCMID Young Investigator Award. Berlin, Germany.

Editorial Board Member

  • Frontiers in Medicine (Lausanne) – Gastroenterology
  • Annals of Hepatology
  • World Journal of Gastroenterology
  • International Journal of Gastroenterology Disorders & Therapy
  • BAOJ Medical and Nursing
  • Journal of Endocrinology and Diabetes Mellitus (Synergy Publishers),
  • Abant Medical Journal
  • Turkish Journal of Medical Sciences


  • AASLD: American Association for the Study of Liver Diseases, USA
  • ASGE: American Society for Gastrointestinal Endoscopy, USA
  • AGA: American Gastroenterological Association, USA
  • AMA: American Medical Association, USA
  • ASNEMGE: Association of National European and Mediterranean Societies of Gastroenterology, Europe
  • Turkish Society of Gastroenterology, Turkey
  • Turkish Society of Liver Researches, Turkey
  • ACG: Fellow and Mentor of American College of Gastroenterology, USA
  • ACP: American College of Physicians, USA
  • FESBGH: Fellow of the European Section and Board of Gastroenterology & Hepatology


International Publications

  • Ira Fox, Tahan V, et al. Host conditioning and rejection monitoring in clinical hepatocytetransplantation. Journal of Hepatology 2017; HEPAT-D-16-01410R1. Accepted (In Print).
  • Sirish CR, Imran A, Mir F, Samiullah, Ibdah JA, Tahan V. Dual infection with hepatitis B and Epstein-Barr virus presenting with severe jaundice, coagulopathy and hepatitis B virus chronicity outcome. Am J Case Rep 2017 (Accepted, In-print).
  • Heath RD, Mir F, Ibdah JA, Tahan V. Microbiome alterations observed in liver diseases present opportunities for potential fecal transplantation. Turk J Gastroenterol 2016; 27(6):495-498.
  • Heath RD, Tahan V. Allogenic adipose derived stem cells present a potential novel approach for treating refractory fistulizing Crohn’s disease. Turk J Gastroenterol 2016; 27(6):568-569.
  • Sathyamurthy A, Tahan V. "Are we ready to change our colorectal cancer screening practice?" Traditional serrated adenomas or serrated adenomas with dysplasia should be regarded as advanced adenomas with high grade dysplasia. Turk J Gastroenterol 2016;27(5):482-483.
  • Sathyamurthy A, Winn JN, Ibdah JA, Tahan V. Culprit for recurrent acute gastrointestinal massive bleeding: "Small bowel Dieulafoy's lesions" - a case report and literature review.World J Gastrointest Pathophysiol 2016;7(3):296-299.
  • Tahan V. Covering the Cover. Turk J Gastroenterol 2016;27:301-303.
  • Mir F, Tahan V. To chromo or not to chromo: That is the question! Turk J Gastroenterol 2016;27:403-404.
  • Winn JN, Tahan V. In a world of increasing resistance emerges a hope to eradicate Helicobacter pylori: Vonoprazan. Turk J Gastroenterol 2016;27:296-7.
  • Tahan V, Almashhrawi A, Kahveci AM, Mutrux R, Ibdah JA. Extension for Community Health Outcomes-hepatitis C: Small steps carve big footprints in the allocation of scarce resources for hepatitis C virus treatment to remote developing areas. World J Hepatol 2016;8:509-12.
  • Kahveci AS, Tahan V. Sofosbuvir and velpatasvir: a complete pan-genotypic treatment for HCV patients. Turk J Gastroenterol 2016; 27: 205-6.
  • Ozaras R, Tahan V, Tabak F. More on autoimmune hepatitis and acute hepatitis A. Eur J Gastroenterol Hepatol. 2016;28(3):360.
  • Kahveci AM, Tahan V. Daclatasvir plus sofosbuvir regimen sheds promising light on future hepatitis C virus genotype 3 therapies. Turk J Gastroenterol 2016;27(1):89-90.
  • Tahan V, Almashhrawi A, Mutrux R, Ibdah JA. Show Me Echo – Hepatitis C: A telemedicine mentoring program for hepatitis C patients in underserved and rural areas in Missouri as a model for developing countries. Turk J Gastroenterol 2015; 26:447-9.
  • Tahan AC, Tahan V. Alcohol is not safe even at Light Amounts. Balkan Med J. 2015;32(2):239.
  • Ozaras R, Tahan V, et al. Hepatic Apoptotic Markers Are Not Predictors For the Virological Response to Interferon-Based Therapy in Chronic Hepatitis C Patients. Eur J Gastroenterol Hepatol. 2015;27(9):1057-62.
  • Tahan AC, Tahan V. “If a fake friend stays in your vodkabulary as a stem friend”: Granulocyte colony-stimulating factor promoted stem cell therapy in severe alcoholic hepatitis. Turk J Gastroenterol 2014; 25: 748-9.
  • Tahan AC, Tahan V. Placental amniotic epithelial cells and their therapy in liver diseases. Front Med (Lausanne) 2014; 1: 1-4.
  • Tahan G, Tahan V. “Actions speak louder than words”: Adenoma detection rates inversely associated with colorectal cancer and mortality. Turk J Gastroenterol 2014;25:602.
  • Tahan AC, Tahan V. “Could a cup of coffee a day keep the liver doctor away?” One cup or two or more cups of coffee per day reduces the risk of death from cirrhosis. Turk J Gastroenterol 2014;25: 470-1.
  • Tahan V. How will I know whether “an apple is ripe or rotten”? A new proposed composite algorithm to predict acute liver failure in patients with drug-induced liver injury. Turk J Gastroenterol 2014; 25: 347-8.
  • Tahan G, Tahan V. “Old classic cars” are hidden treasures: Colorectal cancer screening should be considered in unscreened persons over age 75. Turk J Gastroenterol 2014; 25: 349-50.
  • Tahan V. Once spontaneous bacterial peritonitis develops, discontinue nonselective beta blockers permanently. A proposed practice change update. Turk J Gastroenterol 2014;25:232.
  • Tahan V. Are we hopefully very close to the end of HCV? Turk J Gastroenterol 2014;25: 230-1.
  • Gramignoli R, Tahan V, Dorko K, Venkataramanan R, Fox IJ, Ellis EC, Vosough M, Strom SC. Rapid-and-Sensitive Assessment of Human Hepatocyte Functions. Cell Transplant 2014; 23: 1545- 56.
  • Gramignoli R, Dorko K, Tahan V, Skvorak KJ, Ellis E, Jorns C, Ericzon BG, Fox IJ, Strom SC. Hypothermic storage of human hepatocytes for transplantation. Cell Transplant 2014;23: 1143-51.
  • Gramignoli R, Tahan V, Dorko K, Skvorak KJ, Hansel MC, Zhao W, Venkataramanan R, Ellis EC, Jorns C, Ericzon BG, Rosenborg S, Kuiper R, Soltys KA, Mazariegos GV, Fox IJ, Wilson EM, Grompe M, Strom SC. New potential cell source for hepatocyte transplantation: discarded livers from metabolic disease liver transplants. Stem Cell Res. 2013 Jul;11(1):563-73.
  • Skvorak KJ, Dorko K, Marongiu F, Tahan V, Hansel MC, Gramignoli R, Arning E, Bottiglieri T, Gibson KM, Strom SC. Improved amino acid, bioenergetic metabolite and neurotransmitter profiles following human amnion epithelial cell transplant in intermediate maple syrup urine disease mice. Mol Genet Metab. 2013 Jun;109(2):132-8.
  • Hansel MC, Gramignoli R, Blake W, Davila J, Skvorak K, Dorko K, Tahan V, Lee BR, Tafaleng E, Guzman-Lepe J, Soto-Gutierrez A, Fox IJ, Strom SC. Increased Reprogramming of Human Fetal Hepatocytes Compared With Adult Hepatocytes in Feeder-Free Conditions. Cell Transplant 2014 Jan;23(1):27-38.
  • Skvorak KJ, Dorko K, Marongiu F, Tahan V, Hansel MC, Gramignoli R, Gibson KM, Strom SC. Placental stem cell correction of murine intermediate maple syrup urine disease. Hepatology. 2013 Mar;57(3):1017-23.
  • Sharma S, Ellis EC, Gramignoli R, Dorko K, Tahan V, Hansel M, Mattison DR, Caritis SN, Hines RN, Venkataramanan R, Strom SC. Hepatobiliary Disposition of 17-OHPC and Taurocholate in Fetal Human Hepatocytes: A Comparison with Adult Human Hepatocytes. Drug Metab Dispos 2013;41: 296-304.
  • Uraz S, Tahan G, Aytekin H, Tahan V. N-acetylcysteine expresses powerful anti-inflammatory and antioxidant activities resulting in complete improvement of acetic acid-induced colitis in rats. Scand J Clin Lab Invest 2013;73:61-6.