ELLEN CHUANG MD
NPI 1417044512
Internal Medicine - Medical Oncology in Seattle, WA
About Ellen Chuang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN CHUANG MD (NPI 1417044512) is an individual medical oncology provider in Seattle, Washington, licensed in Washington (MD61168860) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ellen Chuang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ellen Chuang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Placerville, CA 95667
- Reassigned Medicare billing, California enrollment
- 152 clinicians in this Medicare group
Rocky Mount, NC 27804
- Reassigned Medicare billing, North Carolina enrollment
- 205 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98109 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.
SEATTLE, WA 98109
SEATTLE, WA 98109
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 Ellen Chuang's NPI number?
The NPI number for Ellen Chuang is 1417044512. It was assigned to this individual provider in the NPPES registry on October 9, 2006.
Where is Ellen Chuang located?
Ellen Chuang practices at 825 Eastlake Ave E, Seattle, WA 98109. The listed phone number is (206) 520-5000.
What is Ellen Chuang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Ellen Chuang enrolled in Medicare?
Yes. Ellen Chuang is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ellen Chuang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Chuang reassigns Medicare benefits to 2 organizations: Marshall Medical Center (Placerville, CA) and Nhcs Physicians Inc (Rocky Mount, NC). 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 Ellen Chuang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ellen Chuang was last updated on August 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Ellen Chuang, MD · NPI 1417044512
Medical Oncology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 9, 2006.
## Identity
- **NPI:** 1417044512 (Entity type: Individual)
- **Enumerated:** October 9, 2006
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** MD61168860 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 825 EASTLAKE AVE E, Seattle, WA 98109-4405
- **Phone:** (206) 520-5000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Marshall Medical Center (NPI 1215181664, Placerville, CA); Nhcs Physicians Inc (NPI 1003028630, Rocky Mount, NC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 18, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1417044512) · Data from the CMS NPPES public registry.