ELLEN H CHEN M.D.
NPI 1083654313
Internal Medicine - Interventional Cardiology in Coos Bay, OR
About Ellen H Chen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN H CHEN M.D. (NPI 1083654313) is an individual interventional cardiology provider in Coos Bay, Oregon, licensed in Montana (MED-PHYS-LIC-45806) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Bay Area Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 6
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
Ellen H Chen M.d. 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
5Medicare enrollment records show Ellen Chen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Coos Bay, OR 97420
- Reassigned Medicare billing, Oregon enrollment
- 327 clinicians in this Medicare group
Roseburg, OR 97471
- Reassigned Medicare billing, Oregon enrollment
- 90 clinicians in this Medicare group
Lewiston, ID 83501
- Reassigned Medicare billing, Idaho enrollment
- 164 clinicians in this Medicare group
Elko, NV 89801
- Reassigned Medicare billing, Nevada enrollment
- 50 clinicians in this Medicare group
Lafayette, IN 47904
- Reassigned Medicare billing, Indiana enrollment
- 671 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bay Area Hospital
Acute Care Hospitals · Coos Bay, ORSacred Heart Medical Center - Riverbend
Acute Care Hospitals · Springfield, ORSouthern Coos Hospital & Health Center
Critical Access Hospitals · Bandon, ORCoquille Valley Hospital
Critical Access Hospitals · Coquille, ORCurry General Hospital
Critical Access Hospitals · Gold Beach, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97420 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.
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 Chen's NPI number?
The NPI number for Ellen Chen is 1083654313. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is Ellen Chen located?
Ellen Chen practices at 1775 Thompson Rd, Coos Bay, OR 97420. The listed phone number is (541) 269-8111.
What is Ellen Chen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is Ellen Chen enrolled in Medicare?
Yes. Ellen Chen 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 Ellen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Chen reassigns Medicare benefits to 5 organizations: Bay Area Hospital District (Coos Bay, OR), Centennial Medical Group Inc. (Roseburg, OR), St Joseph Hospital LLC (Lewiston, ID), Northeastern Nevada Physician Practices LLC (Elko, NV) and Arnett Clinic, LLC (Lafayette, IN). 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 Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ellen Chen accept?
Health plans from CareSource (Common Ground Healthcare), PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Ellen Chen 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 Ellen Chen affiliated with any hospitals?
According to CMS data, Ellen Chen is affiliated with Bay Area Hospital, Sacred Heart Medical Center - Riverbend, Southern Coos Hospital & Health Center, Coquille Valley Hospital and Curry General Hospital.
When was this NPI record last updated?
The NPPES record for Ellen Chen was last updated on March 24, 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 H Chen, M.D. · NPI 1083654313
Interventional Cardiology physician in Coos Bay, Oregon. Individual provider, active in the CMS NPPES registry since June 7, 2006.
## Identity
- **NPI:** 1083654313 (Entity type: Individual)
- **Enumerated:** June 7, 2006
- **Primary specialty:** Internal Medicine - Interventional Cardiology · taxonomy 207RI0011X
- **State license:** MED-PHYS-LIC-45806 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1775 THOMPSON RD, Coos Bay, OR 97420-2198
- **Phone:** (541) 269-8111
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Bay Area Hospital District (NPI 1225016561, Coos Bay, OR); Centennial Medical Group Inc. (NPI 1518103274, Roseburg, OR); St Joseph Hospital LLC (NPI 1205368404, Lewiston, ID); Northeastern Nevada Physician Practices LLC (NPI 1730408949, Elko, NV); Arnett Clinic, LLC (NPI 1881655090, Lafayette, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1992
## Record status
- **NPPES last updated:** March 24, 2021
- **Other identifiers:** Medicaid 201379160 (IN); Other 000001041073 (IN); Other 8951017 (WA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1083654313) · Data from the CMS NPPES public registry.