Nancy Breen, R. N., N.P.
NPI 1144346594 · Nurse Practitioner · Lancaster, CA
Nancy Breen, R. N., N.P. is a Nurse Practitioner provider in Lancaster, CA (NPI 1144346594).
Provider details
- NPI number
- 1144346594
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- R. N., N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- RN395424 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-21
- Last updated
- 2025-09-11
Frequently asked questions
- What is Nancy Breen's NPI number?
- Nancy Breen's National Provider Identifier (NPI) is 1144346594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Breen's specialty?
- Nancy Breen is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nancy Breen located?
- Nancy Breen's practice location on file with NPPES is 44900 60th St W, Lancaster, CA 93536-7618.
- What is Nancy Breen's phone number?
- The practice phone number listed in the NPPES registry for Nancy Breen is (661) 948-8581.
- Is Nancy Breen's NPI active?
- Yes — Nancy Breen's NPI (1144346594) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.