Douglas ShumakerMD
Douglas Shumaker, MD is a Gastroenterology provider in Portland, OR, as of July 2026.
- NPI1225034937
- Registered2005
- Class of1994
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Douglas Shumaker at a glance
- Provider
- Douglas Shumaker
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Portland, OR
- Medical school
- Oregon Health Sciences University School of Medicine
- Graduated
- 1994
- NPI registered
- 2005
- NPI
- 1225034937
- 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 Douglas Shumaker practice?
Douglas Shumaker, MD is based in Portland, OR. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Douglas Shumaker's NPI number?
Douglas Shumaker's National Provider Identifier (NPI) is 1225034937, registered in 2005. Specialty on record: Gastroenterology; credential MD.
Where did Douglas Shumaker go to medical school?
Douglas Shumaker, MD attended Oregon Health Sciences University School of Medicine, graduating in 1994.
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, Douglas Shumaker among them. The Oregon Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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