ELLIS DENN WHALEN FNP-BC
NPI 1861000309
Nurse Practitioner - Family in Eugene, OR
About Ellis Denn Whalen Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLIS DENN WHALEN FNP-BC (NPI 1861000309) is an individual family provider in Eugene, Oregon, licensed in Oregon (10000925) and active in the NPI registry since July 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Denver, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ellis Denn Whalen Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ellis Whalen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, OR 97477
- Reassigned Medicare billing, Oregon enrollment
- 143 clinicians in this Medicare group
Denver, CO 80219
- Reassigned Medicare billing, Colorado enrollment
- 50 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 97402 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 4
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 Ellis Whalen's NPI number?
The NPI number for Ellis Whalen is 1861000309. It was assigned to this individual provider in the NPPES registry on July 21, 2020.
Where is Ellis Whalen located?
Ellis Whalen practices at 1680 Chambers St Ste 103, Eugene, OR 97402. The listed phone number is (541) 682-3550.
What is Ellis Whalen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ellis Whalen enrolled in Medicare?
Yes. Ellis Whalen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ellis Whalen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellis Whalen reassigns Medicare benefits to 2 organizations: Lane County Oregon (Springfield, OR) and Oak Street Health Physicians Group Of Colorado, PLLC (Denver, CO). 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 Ellis Whalen'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 Ellis Whalen was last updated on October 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Ellis Denn Whalen, FNP-BC · NPI 1861000309
Family physician in Eugene, Oregon. Individual provider, active in the CMS NPPES registry since July 21, 2020.
## Identity
- **NPI:** 1861000309 (Entity type: Individual)
- **Enumerated:** July 21, 2020
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 10000925 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 1680 CHAMBERS ST STE 103, Eugene, OR 97402-3655
- **Phone:** (541) 682-3550
## 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): Lane County Oregon (NPI 1326138314, Springfield, OR); Oak Street Health Physicians Group Of Colorado, PLLC (NPI 1255047288, Denver, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** October 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1861000309) · Data from the CMS NPPES public registry.