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Office
333 SE 7th Ave
Ste 5200
Hillsboro, OR 97123Phone+1 503-681-4310Fax+1 503-681-0925
Education & Training
- Oregon Health & Science University (OHSU Health)Fellowship, Gastroenterology, 1995 - 1998
- Case Western Reserve University/University Hospitals Cleveland Medical CenterResidency, Internal Medicine, 1992 - 1995
- University of Chicago Division of the Biological Sciences The Pritzker School of MedicineClass of 1992
Certifications & Licensure
- OR State Medical License 1995 - 2025
- OH State Medical License 1993 - 1998
- American Board of Internal Medicine Gastroenterology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification Intergy EHR, Vitera Healthcare Solutions, LLC, 2013
Publications & Presentations
PubMed
- 66 citationsUnsedated Peroral Endoscopy With a Video Ultrathin Endoscope: Patient Acceptance, Tolerance, and Diagnostic AccuracyAtif Zaman, Ronald Hapke, Geronimo Sahagun, Ronald M. Katon
The American Journal of Gastroenterology. 1998-08-01 - 168 citationsHouston Consensus Conference on Testing for Helicobacter pylori Infection in the United StatesHashem B. El-Serag, John Y. Kao, Fasiha Kanwal, Mark A. Gilger, Frank LoVecchio
Clinical Gastroenterology and Hepatology. 2018-03-17 - 113 citationsFactors predicting the presence of esophageal or gastric varices in patients with advanced liver diseaseAtif Zaman, Ronald Hapke, Kenneth Flora, Hugo R. Rosen, Kent G. Benner
The American Journal of Gastroenterology. 1999-11-01
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