NANCY A ELLERBROEK
NPI 1821071507
Radiology - Radiation Oncology in Valencia, CA
About Nancy A Ellerbroek NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NANCY A ELLERBROEK (NPI 1821071507) is an individual radiation oncology provider in Valencia, California, licensed in California (G53683) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Nancy A Ellerbroek is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Nancy Ellerbroek reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sherman Oaks, CA 91403
- Reassigned Medicare billing, California enrollment
- 36 clinicians in this Medicare group
Studio City, CA 91604
- Reassigned Medicare billing, California enrollment
- 9 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 91355 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
VALENCIA, CA 91355
VALENCIA, CA 91355
VALENCIA, CA 91355
VALENCIA, CA 91355
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 Nancy Ellerbroek's NPI number?
The NPI number for Nancy Ellerbroek is 1821071507. It was assigned to this individual provider in the NPPES registry on November 27, 2005.
Where is Nancy Ellerbroek located?
Nancy Ellerbroek practices at 25751 Mcbean Pkwy Ste. 110, Valencia, CA 91355. The listed phone number is (661) 259-2990.
What is Nancy Ellerbroek's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Nancy Ellerbroek enrolled in Medicare?
Yes. Nancy Ellerbroek is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nancy Ellerbroek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Ellerbroek reassigns Medicare benefits to 2 organizations: MD Solutions Medical Corp (Sherman Oaks, CA) and Gennady Rubinstein MD Inc (Studio City, CA). 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 Nancy Ellerbroek'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 Nancy Ellerbroek was last updated on May 29, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.