Quick answers
- Where does Doug A. Shumaker see patients?
- Medicare's clinician data lists 2 practice locations, including Portland, OR. Call before your visit to confirm the address.
- What is Doug A. Shumaker's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Doug A. Shumaker accept Medicare assignment?
- Yes. Medicare's clinician data says Doug A. Shumaker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Doug A. Shumaker offer telehealth?
- Medicare's clinician data says Doug A. Shumaker offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Doug A. Shumaker?
- (503) 239-6673, as listed in official Medicare / NPI Registry data.
- What is Doug A. Shumaker's NPI number?
- 1225034937. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Doug A. Shumaker is enrolled with Medicare (CMS data updated 2026-10-02).
- 5050 NE Hoyt, Suite 655Portland, OR 97213 (503) 239‑6673
- 9701 SW Barnes, Suite 300Portland, OR 97225 (503) 297‑8081
Group practices
Medicare enrollment lists Doug A. Shumaker as a member of this group (CMS data updated 2026-10-02).
- The Oregon Clinic, PC362 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oregon Health Sciences University School Of Medicine |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1225034937 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians