Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Margaret O'Brien, RN

Individual provider Child & Adolescent Psychiatric/Mental Health Registered Nurse · NPI 1134267339

Margaret O'Brien, RN is a Child & Adolescent Psychiatric/Mental Health Registered Nurse in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

450 Stanyan St 3 N
San Francisco, CA 94117-1079
Phone: (415) 750-5580
Fax: (415) 750-4912
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Child & Adolescent Psychiatric/Mental Health Registered Nurse (primary) Taxonomy 163WP0807X · Licence RN 235839 (CA)

Record details

NPI number1134267339
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorYes
NPI enumeratedFebruary 1, 2007
Last updated in NPPESSeptember 7, 2023

Other providers in San Francisco