Ronald Lew, MD, FASGE

(503) 692-3750
Areas of Focus: 
Barrett's Esophagus and Esophageal Cancer
Colon Cancer Screening and Prevention
Endoscopic Retrograde Cholangiopancreatography (ERCP)
Endoscopic Ultrasound (EUS)
Gallbladder and Pancreatic Diseases

About Me

On a daily basis, I treat patients within the entire spectrum of gastroenterology. However, my specific focus in gastroenterology centers on therapeutic endoscopy and its application to diseases of the bile ducts and pancreas, as well as gastrointestinal cancers. Whatever the situation, I feel that understanding the patient's symptoms plays a key part when making a diagnosis. And when it comes time to perform any endoscopic procedure, I always make the patient's comfort a top priority.

- Ronald Lew, MD, FASGE

Dr. Lew completed his undergraduate degree in molecular and cell biology at the University of California at Berkeley and received his medical degree from New York University School of Medicine. He completed an internal medicine residency at Harbor-UCLA Medical Center in Southern California. Dr. Lew completed his gastroenterology fellowship training at the University of Pennsylvania in Philadelphia and spent an additional year specializing in therapeutic pancreaticobiliary endoscopy and endoscopic ultrasound. He joined Gastroenterology Specialists of Oregon (now The Oregon Clinic - Gastroenterology South) in 2002. 
Dr. Lew has special interest in gastrointestinal oncology, with particular focus on pancreatic, biliary, and esophageal cancer. He serves on the Tumor Board at both Legacy Meridian Park Hospital and Willamette Falls Hospital. Dr. Lew gained his designation as a Fellow in the American Society for Gastrointestinal Endoscopy (ASGE) in 2012. The designation of Fellow signifies an individual who has made significant contributions to the field of Endoscopy through scientific and/or educational contributions, and service in positions of leadership.
Other Interests: 

In his free time, Dr. Lew enjoys cycling, camping, alpine skiing and spending time with his wife and two children.

My Work

Hospitals Served: 
Legacy Meridian Park Medical Center
Providence Newberg Medical Center
Providence Willamette Falls Medical Center

Education & Honors

Board Certified: 
Education & Training: 
  • Third Tier Fellowship, Therapeutic Endoscopy, University of Pennsylvania, Philadelphia, PA, 2002
  • Fellowship, Gastroenterology, University of Pennsylvania, Philadelphia, PA, 2001
  • Residency, Internal Medicine, Harbor, UCLA Medical Center, Torrance, CA, 1998
  • Internship, Internal Medicine, Harbor, UCLA Medical Center, Torrance, CA, 1996
  • MD, New York University, New York, NY, 1995
  • BA, Molecular Cell Biology, University of California Berkeley, Berkeley, CA, 1991
  • Portland Monthly Magazine, "Top Doctors," 2016
Other Activities: 
  • Instructor of Medicine, University of Pennsylvania, PA, 2001 - 2002
  • Attending Physician, Ward Medicine VAMC, Philadelphia, PA, 2000 - 2002
  • Member, American Gastroenterological Association
  • Member, American Society for Gastrointestinal Endoscopy
  • Member, American College of Gastroenterology