Photo of Atif Zaman, M.D., M.P.H.

Atif Zaman M.D., M.P.H.

    • Professor of Medicine, Division of Gastroenterology and Hepatology School of Medicine
    • Senior Associate Dean for Clinical and Faculty Affairs Office of the Dean School of Medicine

Dr. Zaman is the director of Clinical Hepatology at OHSU. His research interests are Hepatitis C, portal hypertension, gastrointestinal bleeding, public health and liver disease. He received his medical degree from Tufts University School of Medicine in 1991. He completed his residency in Internal Medicine at Baylor School of Medicine, and his Gastroenterology fellowship at OHSU. Dr. Zaman is board certified in Internal Medicine and Gastroenterology.His current research studies include Principal Investigator for each listed:    A physician based surveillance system for chronic liver disease in Multnomah, County, ORA Multi-center Trial to Study Acute Liver Failure Assessment of the clinical characteristics of patients with steatosis as compared to patients with non-alcoholic steatohepatitis: A case-control study.A survey of community practice patterns: Prevention of first variceal bleed, therapy of acute variceal hemorrhage, prophylaxis of rebleeding after initial variceal hemorrhage.Endoscopic screening of varices to prevent first variceal bleed: A prospective evaluation of practice patterns using a national endoscopic database (clinical outcomes research initiative-CORI).An evaluation of the utility of candidate serum markers for the In Vitro diagnosis of liver fibrosis.               When Dr. Zaman is away from medicine he enjoys spending time with family, traveling and playing squash.


  • M.D., Tufts University School of Medicine, 0 1991
  • M.P.H., Oregon Health & Science University, Portland Oregon 2000
  • Residency:

    • Internal medicine-Baylor School of Medicine, Houston
  • Fellowship:

    • Gastroenterology-Oregon Health & Science University, Portland

Memberships and associations

  • Internal medicine, 1994


  • "Risk factors for the presence of varices in cirrhotic patients without a history of variceal hemorrhage." JAMA Internal Medicine November 26 2001
  • "Bleeding caused by portal hypertension" Gastroenterology Clinics of North America December 2005
  • "Plasma osteopontin in acute liver failure" Cytokine June 1 2015
  • "Push enteroscopy for obscure GI bleeding yields a high incidence of proximal lesions within the reach of standard endoscopy" Gastrointestinal Endoscopy  1997
  • "Gc-globulin and prognosis in acute liver failure" Liver Transplantation October 2005
  • "Evidence-based medicine" Gastrointestinal Endoscopy December 2003
  • "Switching regimens in a slow responder" Gastroenterology and Hepatology April 2009
  • "Urgent vs. elective endoscopy for acute non-variceal upper-GI bleeding" Gastrointestinal Endoscopy July 2004
  • "All's fair in love and war" Evidence-Based Gastroenterology August 2004
  • "Culture-negative neutrocytic ascites" Evidence-Based Gastroenterology May 2004
  • "The epidemiology of newly diagnosed chronic liver disease in gastroenterology practices in the United States" American Journal of Gastroenterology November 2008
  • "Prevalence of upper and lower gastrointestinal tract findings in liver transplant candidates undergoing screening endoscopic evaluation" American Journal of Gastroenterology April 1999
  • "Detection and diagnosis of herpes simplex virus infection in adults with acute liver failure" Liver Transplantation  2008
  • "What is the prevalence and prognostic significance of esophageal varices in patients with hepatocellular carcinoma? Commentary" Nature Reviews Gastroenterology and Hepatology June 2007
  • "Total peroral intraoperative enteroscopy for obscure GI bleeding using a dedicated push enteroscope" Gastrointestinal Endoscopy  1998
  • "Push enteroscopy for obscure gastrointestinal bleeding yields a high incidence of proximal lesions within reach of a standard endoscope" Gastrointestinal Endoscopy  1998
  • "Predictive value of actin-free Gc-globulin in acute liver failure" Liver Transplantation September 2007
  • "Symptom distress in patients with end-stage liver disease toward the end of life" Gastroenterology Nursing August 1 2015
  • "MiraLAX vs. Golytely" Alimentary Pharmacology and Therapeutics October 2011
  • "Malignant infiltration of the liver presenting as acute liver failure" Clinical Gastroenterology and Hepatology May 1 2015
  • "Cholangiocarcinoma in patients with primary sclerosing cholangitis" Hepatology  2000
  • "Endoscopic screening for varices in cirrhotic patients" Gastrointestinal Endoscopy January 2007
  • "Unsedated peroral endoscopy with a new video ultrathin (UT) endoscope" Gastrointestinal Endoscopy  1997
  • "Use of a variable-stiffness colonoscope allows completion of colonoscopy after failure with the standard adult colonoscope" Endoscopy  2002
  • "Subtle hepatocellular carcinoma" Case Reports in Gastroenterology September 2011
  • "Cardiopulmonary consequences of transjugular intrahepatic portosystemic shunts" Journal of Clinical Gastroenterology August 2004
  • "Prevalence and impact of manic traits in depressed patients initiating interferon therapy for chronic hepatitis C infection" Journal of Clinical Gastroenterology August 2010
  • "Validation of a multivariate model predicting presence and size of varices" Journal of Clinical Gastroenterology July 2007
  • "Telbivudine for the treatment of hepatitis B e antigen-positive chronic hepatitis patients (Evidence-Based Gastroenterology (2008) 9, (7-8))" Evidence-Based Gastroenterology May 2008
  • "Micro-RNA-122 levels in acute liver failure and chronic hepatitis C" Journal of Medical Virology  2014

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