A colorectal surgeon in Oregon, Dr. David O'Brien offers comprehensive care for intestinal diseases that affect the colon, rectum and intestines.


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Meet Dr. David O'Brien, Colon & Rectal Surgeon at The Oregon Clinic  

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The Oregon Clinic - Gastrointestinal & Minimally Invasive Surgery  


Please Note: This link will direct you to a third-party website unaffiliated with MD.com (https://www.oregonclinic.com/patients/appointments), where you're able to request or schedule an appointment online with Dr. David O'Brien.

Accepting New Patients?

Yes, Dr. David P. O'Brien is accepting new patients at this office.


4805 NE Glisan Street, Suite 6N60, Portland, OR 97213-2933

Office Hours

  Open Lunch Close

Office Details

Doctor Specialties Colorectal Surgery & Surgical Oncology
Accepting New Patients? Yes
Practice Specialty Gastroenterology
Group Practice Oregon Clinic
Languages Spoken English

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Insurance Accepted  

  • Most Major Providers

About Dr. O'Brien
Dr. O'Brien



Dr. David O'Brien graduated from Emory University School of Medicine in 1997 before completing a residency in General Surgery at University of Cincinnati College of Medicine in Cincinnati, OH from 1998 to 2004. He then completed a fellowship in Colorectal Surgery at Cleveland Clinic Foundation from 2004 to 2005.

Dr. O'Brien has one office in Oregon where he specializes in Colorectal Surgery and Surgical Oncology.

Dr. O'Brien works with sixteen doctors including Dr. Jonathan Chun and Dr. Chet Hammill.


Conditions Treated 

  • Anal Fissures
  • Anorectal Abscesses & Fistulas
  • Cancer of the Colon, Rectum and Anus
  • Diverticulitis
  • Hemorrhoids (Non-surgical Treatment)
  • Rectal Prolapse

Services & Procedures

  • Colonoscopy
  • Laparoscopic Treatment of Colon and Rectal Diseases
  • Sphincter Sparing Rectal Surgery
  • Surgery for ulcerative colitis and Crohn's disease
  • Transanal endoscopic microsurgery (TEM)

Education & Training  

Medical School


  • University of Cincinnati College of MedicineCincinnati, OH
    Residency in General Surgery • 1998 - 2004


  • Cleveland Clinic FoundationCleveland, Ohio
    Fellowship in Colorectal Surgery • 2004 - 2005


Hospital Affiliations

  • Providence Health & Services - Oregon
  • Providence Health & Services - Oregon

Languages Spoken  

  • English
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