Stephen ChenM.D.
Stephen Chen, M.D. is a Gastroenterology provider in Tualatin, OR affiliated with 2 ambulatory surgery centers in OR, as of July 2026.
- NPI1831221837
- Registered2007
- Centers2
- StateOR
- Class of2001
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Stephen Chen at a glance
- Provider
- Stephen Chen
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Tualatin, OR
- Medical school
- University of Chicago, Pritzker School of Medicine
- Graduated
- 2001
- NPI registered
- 2007
- NPI
- 1831221837
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Stephen Chen practice?
Stephen Chen, M.D. is based in Tualatin, OR and is affiliated with 2 ambulatory surgery centers: Willamette Surgery Center LLC in Salem, OR and East Portland Surgery Center LLC in Portland, OR. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Stephen Chen's NPI number?
Stephen Chen's National Provider Identifier (NPI) is 1831221837, registered in 2007. Specialty on record: Gastroenterology; credential M.D.
Where did Stephen Chen go to medical school?
Stephen Chen, M.D. attended University of Chicago, Pritzker School of Medicine, graduating in 2001.
How many Gastroenterology providers in Oregon work at ambulatory surgery centers?
82 Gastroenterology surgeons and proceduralists in Oregon are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Stephen Chen among them. The Oregon Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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