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MS. RUTH A. ARMSTRONG NP
NPI 1558419291
Nurse Practitioner - Obstetrics & Gynecology in San Francisco, CA

Active since January 08, 2007
2727 MARIPOSA ST STE 100, RAPE TREATMENT CENTER, SAN FRANCISCO, CA 94110(415) 437-3000(415) 437-3050 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Ms. Ruth A. Armstrong Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. RUTH A. ARMSTRONG NP (NPI 1558419291) is an individual obstetrics & gynecology provider in San Francisco, California, licensed in California (NPF11049) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1558419291
Entity TypeIndividualFemale
Primary Taxonomy363LX0001X
Provider Legal NameMS. RUTH A. ARMSTRONGCredential: NP
Location Address2727 MARIPOSA ST STE 100, RAPE TREATMENT CENTERSan Francisco, CA 94110-1400
Mailing Address2727 Mariposa St Ste 100, Rape Treatment CenterSan Francisco, CA 94110-1400 · (415) 437-3000 · Fax (415) 437-3050
Phone(415) 437-3000
Fax(415) 437-3050
Sole ProprietorNo
Enumeration DateJanuary 8, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1558419291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Obstetrics & GynecologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LX0001X
License✔ Licensed in CA · NPF11049
Also ListedRegistered Nurse · Community HealthTaxonomy 163WC1500X · License RN320167 (CA)
2727 MARIPOSA ST STE 100, San Francisco, CA 94110
Open in Google Maps ↗

Other Identifiers 1

Other069906Sfgh Internal Use Only-commercial Number

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NATHALIE KATE GUEVARA ALVAREZ
Specialist
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000
BEXIA SHI
Social Worker
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000
FAITH REES
Specialist
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3073
JON DEAN GREEN
Counselor
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3013
MS. JESSICA T. DODGE PA-C
Physician Assistant
2727 MARIPOSA ST STE 100, RAPE TREATMENT CENTER
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000
LAURIE IGNACIO
Student in an Organized Health Care Education/Training Program
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000
JOSEPHINE WONG
Nurse Practitioner (Family)
2727 MARIPOSA ST STE 100
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000
MS. WHITNEY MISKELL NP MSN
Nurse Practitioner (Family)
2727 MARIPOSA ST STE 100, RAPE TREATMENT CENTER
SAN FRANCISCO, CA 94110
San Francisco County (415) 437-3000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ruth Armstrong's NPI number?

The NPI number for Ruth Armstrong is 1558419291. It was assigned to this individual provider in the NPPES registry on January 8, 2007.

Where is Ruth Armstrong located?

Ruth Armstrong practices at 2727 Mariposa St Ste 100 Rape Treatment Center, San Francisco, CA 94110. The listed phone number is (415) 437-3000.

What is Ruth Armstrong's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Obstetrics & Gynecology, with taxonomy code 363LX0001X.

When was this NPI record last updated?

The NPPES record for Ruth Armstrong was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.