Quick answers
- Which hospitals does William Ellison work at?
- Medicare's official clinician data lists William Ellison at 3 hospitals: OHSU Hospital and Clinics, Providence St Vincent Medical Center and Salem Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Ellison see patients?
- Medicare's clinician data lists 3 practice locations, including Portland, OR and Salem, OR. Call before your visit to confirm the address.
- What is William Ellison's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does William Ellison accept Medicare assignment?
- Yes. Medicare's clinician data says William Ellison 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.
- What is the phone number for William Ellison?
- (503) 215-1111, as listed in official Medicare / NPI Registry data.
- What is William Ellison's NPI number?
- 1891353066. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Ellison works
Medicare's Facility Affiliation Data lists William Ellison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · CCN 380009
- Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · CCN 380004
- Salem HospitalSalem, OR · Acute Care Hospital · CCN 380051
Practice locations
Addresses where William Ellison is enrolled with Medicare (CMS data updated 2026-10-02).
- 4805 NE Glisan StPortland, OR 97213 (503) 215‑1111
- 890 Oak St SESalem, OR 97301 (503) 561‑5200
- 9205 SW Barnes RdPortland, OR 97225 (503) 216‑1234
Group practices
Medicare enrollment lists William Ellison as a member of these groups (CMS data updated 2026-10-02).
- Salem Health454 clinicians in the group
- Hospitalist Medicine Physicians of Washington - TCS194 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical University Of South Carolina College Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891353066 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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