RonaldMelvinKatonMD

Gastroenterology • Portland, OR

Professor, Medicine, Oregon Health and Science University School of Medicine

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Office
3181 SW Sam Jackson Park Rd
Portland, OR 97239
Phone+1 503-494-8577
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Summary

Dr. Ronald Katon, MD is a gastroenterologist in Portland, Oregon. He is currently licensed to practice medicine in Oregon and California. He is affiliated with OHSU Hospital and is a Professor at Oregon Health and Science University School of Medicine.

Education & Training

Oregon Health & Science UniversityResidency, Internal Medicine, 1969 - 1972
Sidney Kimmel Medical College at Thomas Jefferson UniversityInternship, Transitional Year, 1966 - 1967
Chicago Medical School at Rosalind Franklin University of Medicine and ScienceClass of 1966
Oregon Health & Science UniversityFellowship, Gastroenterology

Certifications & Licensure

CA State Medical License 1967 - Present
OR State Medical License 1970 - 2025
American Board of Internal Medicine Internal Medicine
American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2011-2013

Publications & Presentations

PubMed

12 citations
Warm water infusion during sedated colonoscopy does not decrease amount of sedation medication used
Brent Y. Lee, Ronald M. Katon, Daniel O. Herzig, M. Brian Fennerty> ;Gastrointestinal Endoscopy. 2012 Dec 1
1 citations
Acute proctosigmoiditis caused by a dexamethasone mouthwash enema.
Keri L. Hill, Hahn Huang, Ronald M. Katon> ;Gastrointestinal Endoscopy. 2005 Apr 1
6 citations
Anterograde colonoscopy: Per oral diagnosis of colon cancer with an enteroscope in a man with a jejunoileal bypass
James R. Burton, Ronald M. Katon> ;Gastrointestinal Endoscopy. 2003 Jun 1
4 citations
Embryonal rhabdomyosarcoma in a 3-year-old child diagnosed at ERCP: case report and review.
Gordon C. Hunt, Christopher L. Corless, Annie Terry, Ronald M. Katon> ;Gastrointestinal Endoscopy. 2002 Sep 1
40 citations
Use of a variable-stiffness colonoscope allows completion of colonoscopy after failure with the standard adult colonoscope.
Douglas A. Shumaker, Atif Zaman, Ronald M. Katon> ;Endoscopy. 2002 Sep 1
51 citations
A randomized controlled trial in a training institution comparing a pediatric variable stiffness colonoscope, a pediatric colonoscope, and an adult colonoscope
Douglas A. Shumaker, Atif Zaman, Ronald M. Katon> ;Gastrointestinal Endoscopy. 2002 Feb 1
10 citations
Solitary Rectal Ulcer Syndrome Presenting with Rectal Prolapse, Severe Mucorrhea and Eroded Polypoid Hyperplasia: Case Report and Review of the Literature
Deepak V. Gopal, Christopher Young, Ronald M. Katon> ;Canadian Journal of Gastroenterology = Journal Canadien De Gastroenterologie. 2001 Jul 1
17 citations
NSAID-induced small bowel diaphragms and strictures diagnosed with intraoperative enteroscopy.
Douglas A. Shumaker, Kari Bladen, Ronald M. Katon> ;Canadian Journal of Gastroenterology = Journal Canadien De Gastroenterologie. 2001 Sep 1
74 citations
Total peroral intraoperative enteroscopy for obscure GI bleeding using a dedicated push enteroscope: diagnostic yield and patient outcome
Atif Zaman, Brett C. Sheppard, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1999 Oct 1
24 citations
Endoscopic balloon dilation of multiple NSAID-induced colonic strictures: case report and review of literature on NSAID-related colopathy
Deepak V. Gopal, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1999 Jul 1
11 citations
A role for transnasal esophagogastroduodenoscopy in patients intolerant to the oral route: report of two cases.
Deepak V. Gopal, Atif Zaman, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1999 Mar 1
120 citations
A randomized trial of peroral versus transnasal unsedated endoscopy using an ultrathin videoendoscope.
Atif Zaman, Martin Hahn, Ronald Hapke, Kandice L. Knigge, M. Brian Fennerty, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1999 Mar 1
67 citations
Unsedated Peroral Endoscopy With a Video Ultrathin Endoscope: Patient Acceptance, Tolerance, and Diagnostic Accuracy
Atif Zaman, Ronald Hapke, Geronimo Sahagun, Ronald M. Katon> ;The American Journal of Gastroenterology. 1998 Aug 1
126 citations
Push enteroscopy for obscure gastrointestinal bleeding yields a high incidence of proximal lesions within reach of a standard endoscope
Atif Zaman, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1998 May 1
2 citations
Isolated jejunal Crohn's disease in a young woman presenting with malabsorption syndrome and abdominal pain.
Ronald Hapke, Christopher L. Corless, Ronald M. Katon> ;The American Journal of Gastroenterology. 1997 Oct 1
20 citations
Massive hematochezia from a visible vessel within a stercoral ulcer: effective endoscopic therapy
Kandice L. Knigge, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1997 Oct 1
21 citations
Peroral ultrathin endoscopy in adult patients
Barry T. De Gregorio, Jay C. Poorman, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1997 Mar 1
70 citations
Malignant esophageal obstruction and esophagorespiratory fistula: palliation with a polyethylene-covered Z-stent.
Richard R. Saxon, Katherine E. Morrison, Paul C. Lakin, Bryan D. Petersen, Robert E. Barton, Ronald M. Katon, Frederick S. Keller> ;Radiology. 1997 Feb 1
43 citations
Treatment of Malignant Esophageal Obstructions with Covered Metallic Z Stents: Long-term Results in 52 Patients
Richard R. Saxon, Robert E. Barton, Ronald M. Katon, Bryan D. Petersen, Paul C. Lakin, Hans A. Timmermans, Barry Uchida, Frederick S. Keller, Josef Rösch> ;Journal of Vascular and Interventional Radiology. 1995 Sep 1
155 citations
Prior radiation and chemotherapy increase the risk of life-threatening complications after insertion of metallic stents for esophagogastric malignancy
Kirsten J. Kinsman, Barry DeGregorio, Ronald M. Katon, Katherine M. Morrison, Richard R. Saxon, Frederick S. Keller, Josef Rösch> ;Gastrointestinal Endoscopy. 1995 Apr 1
20 citations
Treatment of esophageal obstruction from mediastinal compressive tumors with covered, self-expanding metallic Z-stents
Barry T. De Gregorio, Kirsten J. Kinsman, Ronald M. Katon, Katherine M. Morrison, Richard R. Saxon, Robert E. Barton, Frederick S. Keller, Josef Rösch> ;Gastrointestinal Endoscopy. 1995 Apr 1
38 citations
Treatment of malignant esophagorespiratory fistulas with silicone-covered metallic Z stents.
Richard R. Saxon, Robert E. Barton, Ronald M. Katon, Paul C. Lakin, Hans A. Timmermans, Barry T. Uchida, Frederick S. Keller, Josef Rösch> ;Journal of Vascular and Interventional Radiology. 1995 Mar 1
10 citations
Small bowel involvement by Mycobacterium avium complex in a patient with AIDS: Endoscopic, histologic, and radiographic similarities to Whipple's disease
Jay C. Poorman, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1994 Nov 1
26 citations
Tiny snares prove safe and effective for removal of diminutive colorectal polyps.
John H. McAfee, Ronald M. Katon> ;Gastrointestinal Endoscopy. 1994 May 1
124 citations
Silicone-covered self-expanding metallic stents for the palliation of malignant esophageal obstruction and esophagorespiratory fistulas: experience in 32 patients and ...
William C. Wu, Ronald M. Katon, Richard R. Saxon, Robert E. Barton, Barry T. Uchida, Frederick S. Keller, Josef Rösch> ;Gastrointestinal Endoscopy. 1994 Jan 1
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Hospital Affiliations

OHSU HospitalPortland, Oregon