Individual provider Active NPI

Robert L Nussbaum, M.D.

  • Internal Medicine Physician
  • San Francisco, CA
National Provider Identifier
1437183092
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
C52306 Issued in CA
Practice address
513 Parnassus Ave
Hse901E
San Francisco, CA 94143-2205
Phone
(415) 476-3200
NPI assigned
Jul 10, 2006
Sex
Male
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 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X C52306 CA Primary
Clinical Genetics (M.D.) Physician 207SG0201X C52306 CA
Clinical Molecular Genetics Physician 207SG0203X C52306 CA

Addresses

Primary practice location

513 Parnassus Ave
Hse901E
San Francisco, CA 94143-2205

Mailing address

513 Parnassus Ave
Hse901E
San Francisco, CA 94143-2205
Phone (415) 476-3200

Other identifiers 1

IdentifierTypeStateIssuer
HSP40454GMedicaidCA

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
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
C52306CAMDInternal Medicine Physician

NPI Registry JSON

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

{
    "created_epoch": "1152489600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1437183092",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "513 PARNASSUS AVE",
            "address_2": "HSE901E",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432205",
            "telephone_number": "415-476-3200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "513 PARNASSUS AVE",
            "address_2": "HSE901E",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432205",
            "telephone_number": "415-476-3200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NUSSBAUM",
        "first_name": "ROBERT",
        "middle_name": "L",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-10",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "C52306",
            "primary": true
        },
        {
            "code": "207SG0201X",
            "taxonomy_group": "",
            "desc": "Medical Genetics, Clinical Genetics (M.D.)",
            "state": "CA",
            "license": "C52306",
            "primary": false
        },
        {
            "code": "207SG0203X",
            "taxonomy_group": "",
            "desc": "Medical Genetics, Clinical Molecular Genetics",
            "state": "CA",
            "license": "C52306",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "HSP40454G",
            "state": "CA"
        }
    ],
    "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.