SIENNA CHRISTINE NELSON MD
NPI 1326508912
Family Medicine in Woodburn, OR
About Sienna Christine Nelson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIENNA CHRISTINE NELSON MD (NPI 1326508912) is an individual family medicine provider in Woodburn, Oregon, licensed in Oregon (MD203210) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Providence Portland Medical Center, and is a graduate of University Of Tennessee, Hsc, College Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Sienna Christine Nelson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Sienna Nelson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mount Angel, OR 97362
- Reassigned Medicare billing, Oregon and Washington enrollments
- Medicare enrollment name: Kaiser Foundation Health Plan Of The Northwest
- Also billed through NPI 1871848457 (Washington)
- 3,207 clinicians in this Medicare group
Wilsonville, OR 97070
- Reassigned Medicare billing, Oregon enrollment
- 1,501 clinicians in this Medicare group
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 676 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence Portland Medical Center
Acute Care Hospitals · Portland, ORProvidence Milwaukie Hospital
Acute Care Hospitals · Milwaukie, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97071 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WOODBURN, OR 97071
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sienna Nelson's NPI number?
The NPI number for Sienna Nelson is 1326508912. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Sienna Nelson located?
Sienna Nelson practices at 1175 Mount Hood Ave, Woodburn, OR 97071. The listed phone number is (503) 982-2000.
What is Sienna Nelson's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Sienna Nelson enrolled in Medicare?
Yes. Sienna Nelson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sienna Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sienna Nelson reassigns Medicare benefits to 3 organizations: Providence Health & Services Oregon (Mount Angel, OR), Providence Health & Services - Oregon (Wilsonville, OR) and Providence Health & Services - Oregon (Portland, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sienna Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sienna Nelson accept?
Health plans from BridgeSpan Health Company, Providence Health Plan and Regence BlueCross BlueShield of Oregon list Sienna Nelson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sienna Nelson affiliated with any hospitals?
According to CMS data, Sienna Nelson is affiliated with Providence Portland Medical Center and Providence Milwaukie Hospital.
When was this NPI record last updated?
The NPPES record for Sienna Nelson was last updated on July 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Sienna Christine Nelson, MD · NPI 1326508912
Family Medicine physician in Woodburn, Oregon. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1326508912 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD203210 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 1175 MOUNT HOOD AVE, Woodburn, OR 97071-9060
- **Phone:** (503) 982-2000 · **Fax:** (503) 982-0660
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Providence Health & Services Oregon (NPI 1417978164, Mount Angel, OR); Providence Health & Services - Oregon (NPI 1245489087, Wilsonville, OR); Providence Health & Services - Oregon (NPI 1003991845, Portland, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Tennessee, Hsc, College Of Medicine, class of 2019
## Record status
- **NPPES last updated:** July 24, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1326508912) · Data from the CMS NPPES public registry.