~ BrianWillis.MD.com ~

As a gastroenterologist in Portland, Dr. Brian Willis treats conditions that affect the digestive system, like constipation or inflammatory bowel disease.

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Dr. Brian Willis graduated from University of Illinois College of Medicine in 1985.

Dr. Willis has one office in Oregon where he specializes in Gastroenterology. Learn more.

Dr. Willis works with seven doctors including Dr. Suzanne Zarling and Dr. Robert Shneidman.

Education & Training  

Medical School

Hospital Affiliations

  • Kaiser Sunnyside Medical Center

Languages Spoken  

  • English

Kaiser Permanente Med Grp Sth  


3500 N Interstate Ave, Portland, Oregon 97227-1196

Office Hours

  Open Lunch Close
Mon 8:00 am 5:00 pm
Tue 8:00 am 5:00 pm
Wed 8:00 am 5:00 pm
Thu 8:00 am 5:00 pm
Fri 8:00 am 5:00 pm

Office Details

Doctor Specialty Gastroenterology
Practice SpecialtyMulti-specialty
Group PracticeKaiser Permanente Medical Group
Health SystemKaiser Permanente
Hospital Affiliation
  • Kaiser Sunnyside Medical Center
Languages Spoken Arabic, English, French, German, Italian, Korean, Mandarin, Polish, Portuguese, Russian, Spanish, Tagalog, Vietnamese

Insurances Accepted  

Please contact the doctor’s office to inquire about insurance.