Margaret O'Brien, RN
NPI 1134267339 · Child & Adolescent Psychiatric/Mental Health Registered Nurse · San Francisco, CA
Margaret O'Brien, RN is a Child & Adolescent Psychiatric/Mental Health Registered Nurse provider in San Francisco, CA (NPI 1134267339).
Provider details
- NPI number
- 1134267339
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatric/Mental Health Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- Yes
- License
- RN 235839 (CA)
Specialties & taxonomies
- Child & Adolescent Psychiatric/Mental Health Registered NursePrimary163WP0807XLicense RN 235839 (CA)
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
- 2007-02-01
- Last updated
- 2023-09-07
Frequently asked questions
- What is Margaret O'Brien's NPI number?
- Margaret O'Brien's National Provider Identifier (NPI) is 1134267339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret O'Brien's specialty?
- Margaret O'Brien is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Margaret O'Brien located?
- Margaret O'Brien's practice location on file with NPPES is 450 Stanyan St, San Francisco, CA 94117-1079.
- What is Margaret O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Margaret O'Brien is (415) 750-5580.
- Is Margaret O'Brien's NPI active?
- Yes — Margaret O'Brien's NPI (1134267339) is active in the NPPES registry as of the last update on 2023-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.