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

MS. Ruth A. Armstrong, NP

Individual provider Community Health Registered Nurse · NPI 1558419291

MS. Ruth A. Armstrong, NP is a Community Health Registered Nurse in San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

2727 Mariposa St Ste 100 Rape Treatment Center
San Francisco, CA 94110-1400
Phone: (415) 437-3000
Fax: (415) 437-3050
Show map & directions

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

Specialties & licences

Obstetrics & Gynecology Nurse Practitioner (primary) Taxonomy 363LX0001X · Licence NPF11049 (CA)
Community Health Registered Nurse Taxonomy 163WC1500X · Licence RN320167 (CA)

Record details

NPI number1558419291
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESSeptember 11, 2025

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