Quick answers
- Which hospitals does Sienna Nelson work at?
- Medicare's official clinician data lists Sienna Nelson at 2 hospitals: Providence Milwaukie Hospital and Providence Portland Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sienna Nelson see patients?
- Medicare's clinician data lists 1 practice location in Portland, OR. Call before your visit to confirm the address.
- What is Sienna Nelson's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Sienna Nelson accept Medicare assignment?
- Yes. Medicare's clinician data says Sienna Nelson 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 Sienna Nelson offer telehealth?
- Medicare's clinician data says Sienna Nelson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sienna Nelson?
- (503) 203-0700, as listed in official Medicare / NPI Registry data.
- What is Sienna Nelson's NPI number?
- 1326508912. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sienna Nelson works
Medicare's Facility Affiliation Data lists Sienna Nelson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Milwaukie HospitalMilwaukie, OR · Acute Care Hospital · CCN 380082
- Providence Portland Medical CenterPortland, OR · Acute Care Hospital · CCN 380061
Practice locations
Addresses where Sienna Nelson is enrolled with Medicare (CMS data updated 2026-10-02).
- 839 NE Holladay StPortland, OR 97232 (503) 203‑0700
Group practices
Medicare enrollment lists Sienna Nelson as a member of this group (CMS data updated 2026-10-02).
- Providence Health and Services Oregon1,433 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326508912 |
| 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