DR. ELLEN LOUISE SINGER M.D.
NPI 1689687279
Internal Medicine in Portland, OR
About Dr. Ellen Louise Singer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ELLEN LOUISE SINGER M.D. (NPI 1689687279) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (MD19574) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Rochester School Of Medicine And Dentistry (1990).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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
Dr. Ellen Louise Singer 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
4Medicare enrollment records show Ellen Singer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, OR 97227
- Reassigned Medicare billing, Oregon and Washington enrollments
- Also billed through NPI 1184786527 (Washington)
- 3,207 clinicians in this Medicare group
Sandy, OR 97055
- Reassigned Medicare billing, Oregon enrollment
- 28 clinicians in this Medicare group
Renton, WA 98057
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Denver, CO 80247
- Reassigned Medicare billing, Colorado enrollment
- Medicare enrollment name: Colorado Permanente Medical Group PC
- 1,715 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 97227 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.
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
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 Singer's NPI number?
The NPI number for Ellen Singer is 1689687279. It was assigned to this individual provider in the NPPES registry on August 14, 2006.
Where is Ellen Singer located?
Ellen Singer practices at 3500 N Interstate Ave, Portland, OR 97227. The listed phone number is (503) 331-6116.
What is Ellen Singer's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ellen Singer enrolled in Medicare?
Yes. Ellen Singer 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 Singer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Singer reassigns Medicare benefits to 4 organizations: Kaiser Foundation Health Plan Of The Northwest (Portland, OR), Orchid Oakridge Clinic, PC (Sandy, OR), Kaiser Foundation Health Plan Of Washington (Renton, WA) and Colorado Permanente Medical Group, P.C. (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 Ellen Singer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ellen Singer accept?
Health plans from Moda Health Plan, Inc. list Ellen Singer 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.
When was this NPI record last updated?
The NPPES record for Ellen Singer was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Ellen Louise Singer, M.D. · NPI 1689687279
Internal Medicine physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since August 14, 2006.
## Identity
- **NPI:** 1689687279 (Entity type: Individual)
- **Enumerated:** August 14, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD19574 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3500 N INTERSTATE AVE, Portland, OR 97227-1196
- **Phone:** (503) 331-6116
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Northwest (NPI 1093043424, Portland, OR); Orchid Oakridge Clinic, PC (NPI 1417098773, Sandy, OR); Kaiser Foundation Health Plan Of Washington (NPI 1124264577, Renton, WA); Colorado Permanente Medical Group, P.C. (NPI 1760599724, Denver, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Rochester School Of Medicine And Dentistry, class of 1990
## Record status
- **NPPES last updated:** January 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1689687279) · Data from the CMS NPPES public registry.