Ruth A. Armstrong, NP

Primary specialty

Obstetrics & Gynecology Nurse PractitionerTaxonomy code 363LX0001X

License

NPF11049 Issued in CA

Practice address

2727 Mariposa St Ste 100
Rape Treatment Center
San Francisco, CA 94110-1400

Phone

(415) 437-3000

Fax

(415) 437-3050

NPI assigned

Jan 8, 2007

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• University of California

  dba Trauma Recovery Center

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • San Francisco, CA
  • NPI 1417188194
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1168214400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1558419291",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2727 MARIPOSA ST STE 100",
            "address_2": "RAPE TREATMENT CENTER",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941101400",
            "telephone_number": "415-437-3000",
            "fax_number": "415-437-3050"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2727 MARIPOSA ST STE 100",
            "address_2": "RAPE TREATMENT CENTER",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941101400",
            "telephone_number": "415-437-3000",
            "fax_number": "415-437-3050"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARMSTRONG",
        "first_name": "RUTH",
        "middle_name": "A.",
        "name_prefix": "Ms.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-01-08",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WC1500X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Community Health",
            "state": "CA",
            "license": "RN320167",
            "primary": false
        },
        {
            "code": "363LX0001X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Obstetrics & Gynecology",
            "state": "CA",
            "license": "NPF11049",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "SFGH INTERNAL USE ONLY-COMMERCIAL NUMBER",
            "identifier": "069906",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Latoya Armstrong
• Lauren Ann Armstrong
• Linda Christine Armstrong, M.D.
• Michelle Armstrong
• Ovester Armstrong Jr.
• Valerie Lynn Armstrong, MD
• Rima Arnaout, M.D.
• Arne J Brock-Utne MD Inc
• Marissa Arnerich
• Sara A Arney

• Obstetrics & Gynecology Nurse Practitioner in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Obstetrics & Gynecology Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.