Nancy Ellerbroek
NPI 1821071507 · Radiation Oncology Physician · Valencia, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Ellerbroek is a Radiation Oncology Physician provider in Valencia, CA (NPI 1821071507).
Provider details
- NPI number
- 1821071507
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- G53683 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-27
- Last updated
- 2015-05-29
Frequently asked questions
- What is Nancy Ellerbroek's NPI number?
- Nancy Ellerbroek's National Provider Identifier (NPI) is 1821071507, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Ellerbroek's specialty?
- Nancy Ellerbroek is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Ellerbroek located?
- Nancy Ellerbroek's practice location on file with NPPES is 25751 Mcbean Pkwy, Valencia, CA 91355-3701.
- What is Nancy Ellerbroek's phone number?
- The practice phone number listed in the NPPES registry for Nancy Ellerbroek is (661) 259-2990.
- Does Nancy Ellerbroek accept Medicare?
- Nancy Ellerbroek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Ellerbroek's NPI active?
- Yes — Nancy Ellerbroek's NPI (1821071507) is active in the NPPES registry as of the last update on 2015-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.