INTERSTATE RADIATION ONCOLOGY
NPI 1093043424
Clinic/Center - Oncology, Radiation in Portland, OR
About Interstate Radiation Oncology NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
INTERSTATE RADIATION ONCOLOGY (NPI 1093043424) is a healthcare organization registered as an oncology, radiation in Portland, Oregon and active in the NPI registry since November 2009. The organization lists Stephen Shawn Barton, Executive Director, Revenue Cycle, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Interstate Radiation Oncology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3,193Medicare enrollment records show 3,193 clinicians reassign Medicare billing to Interstate Radiation Oncology, which bills Medicare for the services they deliver. Of these, 80 practice at this address and 1,801 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 73
Nearest to this location (20)
See all 3,193Portland, OR 97227
Portland, OR 97227
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Kaiser Foundation Health Plan Of The Northwest's NPI number?
The NPI number for Kaiser Foundation Health Plan Of The Northwest is 1093043424. It was assigned to this organization in the NPPES registry on November 23, 2009. The provider is doing business as Interstate Radiation Oncology.
Where is Kaiser Foundation Health Plan Of The Northwest located?
Kaiser Foundation Health Plan Of The Northwest is located at 3620 N Interstate Ave, Portland, OR 97227. The listed phone number is (503) 280-2931.
What is Kaiser Foundation Health Plan Of The Northwest's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Oncology, Radiation, with taxonomy code 261QX0203X.
Is Kaiser Foundation Health Plan Of The Northwest enrolled in Medicare?
Yes. Kaiser Foundation Health Plan Of The Northwest is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Kaiser Foundation Health Plan Of The Northwest?
According to the CMS Revalidation Reassignment List (October 2026 release), 3,193 clinicians in 73 Medicare specialties reassign their Medicare billing to Kaiser Foundation Health Plan Of The Northwest. A 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 the clinician's services. The largest specialties are Family Practice (500), Internal Medicine (385) and Nurse Practitioner (186). Of these, 80 practice at this address and 1,801 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Kaiser Foundation Health Plan Of The Northwest accept?
Health plans from Kaiser Permanente list Kaiser Foundation Health Plan Of The Northwest 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 Kaiser Foundation Health Plan Of The Northwest was last updated on June 1, 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.
# Interstate Radiation Oncology · NPI 1093043424
Oncology, Radiation organization in Portland, Oregon. Organization record, active in the CMS NPPES registry since November 23, 2009.
## Identity
- **NPI:** 1093043424 (Entity type: Organization)
- **Enumerated:** November 23, 2009
- **Primary specialty:** Clinic/Center - Oncology, Radiation · taxonomy 261QX0203X
- **Legal business name:** Kaiser Foundation Health Plan Of The Northwest
- **Organization subpart:** Yes (part of Kaiser Foundation Health Plan Of The Northwest)
- **Authorized official:** Stephen Barton, EXECUTIVE DIRECTOR, REVENUE CYCLE
## Practice location
- **Address:** 3620 N INTERSTATE AVE, Portland, OR 97227-1106
- **Phone:** (503) 280-2931
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3,193 clinicians in 73 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (500), Internal Medicine (385), Nurse Practitioner (186); 80 practice at this address and 1,801 within 10 miles; [full list](https://npiprofile.com/npi/1093043424/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 1, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1093043424) · Data from the CMS NPPES public registry.