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Office
2825 8th Ave N
Billings, MT 59101Phone+1 406-238-2500
Education & Training
Oregon Health & Science University (OHSU Health)Fellowship, Gastroenterology, 1984 - 1986
University of WashingtonResidency, Internal Medicine, 1981 - 1984- University of Washington School of MedicineClass of 1981
Certifications & Licensure
OR State Medical License 1984 - Present
MT State Medical License 1986 - 2026
NC State Medical License 2013 - 2019
WA State Medical License 1982 - 1986- American Board of Internal Medicine Internal Medicine
- American Board of Internal Medicine Gastroenterology
Publications & Presentations
PubMed
- 18 citationsEosinophilic gastroenteritis presenting with biliary and duodenal obstruction.Mark C. Rumans, David A. Lieberman
The American Journal of Gastroenterology. 1987-08-01 - 9 citationsHepatic abscesses as a complication of the sump syndrome: Combined surgical and endoscopic therapy. Case report and review of the literatureMark C. Rumans, Ronald M. Katon, Daniel K. Lowe
Gastroenterology. 1987-03-01 - 10 citationsScreening flexible sigmoidoscopy by primary care physicians. Effectiveness and costs in patients negative for fecal occult blood.Mark C. Rumans, Kent G. Benner, Emmet B. Keeffe, John M. Custis, Darrell R. Lockwood
The Western Journal of Medicine. 1986-06-01
Press Mentions
New CMS Star Ratings Ignore Socio-Economic FactorsDecember 5th, 2018
CMS Star Ratings Disproportionately Benefit Specialty Hospitals, Data ShowMarch 14th, 2018
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