Individual provider Active NPI

Karen G. Duderstadt, NP

  • Ambulatory Care Registered Nurse
  • San Francisco, CA
National Provider Identifier
1144347519
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ambulatory Care Registered NurseTaxonomy code 163WP2201X
License
RN229710 Issued in CA
Practice address
1001 Potrero Ave # 6M
SFGH Children's Clinic
San Francisco, CA 94110-3518
Phone
(415) 206-5908
Fax
(415) 753-2161
NPI assigned
Mar 23, 2007
Last updated
Sep 11, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Ambulatory Care Registered Nurse 163WP2201X RN229710 CA Primary
Pediatric Nurse Practitioner 363LP0200X NPF3424 CA

Addresses

Primary practice location

1001 Potrero Ave # 6M
SFGH Children's Clinic
San Francisco, CA 94110-3518

Mailing address

1001 Potrero Ave # 6M
SFGH Children's Clinic
San Francisco, CA 94110-3518
Phone (415) 206-5908

Other identifiers 1

IdentifierTypeStateIssuer
030841OtherSFGH INTERNAL USE ONLY-COMMERCIAL NUMBER

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
RN229710CAMDAmbulatory Care Registered Nurse
NPF3424CAMDPediatric Nurse Practitioner

NPI Registry JSON

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

{
    "created_epoch": "1174608000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1144347519",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1001 POTRERO AVE # 6M",
            "address_2": "SFGH CHILDREN'S CLINIC",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941103518",
            "telephone_number": "415-206-5908",
            "fax_number": "415-753-2161"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1001 POTRERO AVE # 6M",
            "address_2": "SFGH CHILDREN'S CLINIC",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941103518",
            "telephone_number": "415-206-5908",
            "fax_number": "415-753-2161"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUDERSTADT",
        "first_name": "KAREN",
        "middle_name": "G.",
        "name_prefix": "Ms.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-03-23",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WP2201X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Ambulatory Care",
            "state": "CA",
            "license": "RN229710",
            "primary": true
        },
        {
            "code": "363LP0200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Pediatrics",
            "state": "CA",
            "license": "NPF3424",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "SFGH INTERNAL USE ONLY-COMMERCIAL NUMBER",
            "identifier": "030841",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

  • 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.