Elizabeth O'Brien, N.P.
NPI 1942311055 · Obstetrics & Gynecology Nurse Practitioner · San Diego, CA
Elizabeth O'Brien, N.P. is a Obstetrics & Gynecology Nurse Practitioner provider in San Diego, CA (NPI 1942311055).
Provider details
- NPI number
- 1942311055
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- RN494828 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing 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
- 2006-08-31
- Last updated
- 2025-09-11
Frequently asked questions
- What is Elizabeth O'Brien's NPI number?
- Elizabeth O'Brien's National Provider Identifier (NPI) is 1942311055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth O'Brien's specialty?
- Elizabeth O'Brien is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Elizabeth O'Brien located?
- Elizabeth O'Brien's practice location on file with NPPES is 16950 Via Tazon, San Diego, CA 92127-1607.
- What is Elizabeth O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth O'Brien is (858) 499-2702.
- Is Elizabeth O'Brien's NPI active?
- Yes — Elizabeth O'Brien's NPI (1942311055) 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.