Mark Cahill, MD

Gastroenterology
503-692-3750
Areas of Focus: 
Colon Cancer Screening & Prevention
Gastroesophageal Reflux Disease (GERD)
Inflammatory Bowel Disease (IBD)
Liver Disease
Swallowing Dysfunction
Request an Appointment
Refer a Patient

About Me

In the rapidly changing fields of gastroenterology and hepatology, I strive to provide my patients and their families with a doctor-patient partnership built on collaboration, listening, and respect. I believe through this type of relationship, patients can best achieve their unique healthcare goals.

- Mark Cahill, MD

Dr. Cahill graduated from Montana State University with highest honors, and received his M.D. from the University of Washington School of Medicine in Seattle, WA. He completed his internal medicine residency at Providence Portland Medical Center and his gastroenterology fellowship at the University of Tennessee Health Sciences Center in Memphis, TN. He brings several honors and awards to The Oregon Clinic - Gastroenterology South, including the Rushing Memorial Scholarship Research Grant. Dr. Cahill is a member of the American Gastroenterological Association.
Other Interests: 

Dr. Cahill is married with an adorable daughter and several pets. When he’s not working he enjoys hiking, skiing, travel, and exploring the Portland dining scene.

My Work

Office Locations: 
Gastroenterology South - Tualatin
Gastroenterology South - Oregon City
Hospitals Served: 
Legacy Meridian Park Medical Center
Providence Newberg Medical Center
Providence Willamette Falls Medical Center
Specialties: 
Gastroenterology
Areas of Focus: 
Colon Cancer Screening & Prevention
Gastroesophageal Reflux Disease (GERD)
Inflammatory Bowel Disease (IBD)
Liver Disease
Swallowing Dysfunction

Education & Honors

Board Certification: 
  • Internal Medicine
  • Gastroenterology
Education & Training: 
  • Fellowship, Gastroenterology, University of Tennessee Health Sciences Center, Memphis, TN, 2013
  • Residency, Internal Medicine, Providence Portland Medical Center, Portland, OR , 2009
  • MD, University of Washington School of Medicine, Seattle, WA, 2006
  • BS, Psychology, Montana State University, Bozeman, MT, 2002
Leadership: 
  • Chairman, Patient Care Operations Committee, Providence Willamette Falls Medical Center
Honors: 
  • Portland Monthly Magazine, "Top Doctors", 2018
  • Honors & Awards: Medical Student Research Training Program Grant, University of Washington School of Medicine, 2003
  • Rushing Memorial Scholarship Research Grant, Montana State University, 2003
Other Activities: 
  • Member, American Gastroenterological Association