Nathan Billett, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

199091 Issued in CA

Practice address

1200 El Camino Real
South San Francisco, CA 94080-3299

Phone

(650) 742-2000

NPI assigned

Mar 21, 2023

Last updated

Jul 21, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1679356800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784592000000",
    "number": "1447952593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5820 OWENS DR FL 2",
            "city": "PLEASANTON",
            "state": "CA",
            "postal_code": "945883900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1200 EL CAMINO REAL",
            "city": "SOUTH SAN FRANCISCO",
            "state": "CA",
            "postal_code": "940803299",
            "telephone_number": "650-742-2000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "99 Montecillo Rd",
            "address_purpose": "LOCATION",
            "city": "San Rafael",
            "state": "CA",
            "postal_code": "949033308",
            "country_code": "US",
            "telephone_number": "415-444-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BILLETT",
        "first_name": "NATHAN",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-03-21",
        "last_updated": "2026-07-21",
        "certification_date": "2026-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "199091",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ncalceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1200 El Camino Real",
            "city": "South San Francisco",
            "state": "CA",
            "country_code": "US",
            "postal_code": "940803299",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jodie L Beyer, PHARM. D.
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• Craig Bialon-Choy, MSPT
• Madeleine T. Bibat, MD
• Jenalyn Bigasin
• Bio-Medical Applications of California, Inc. (Fresenius Kidney Care South San Francisco)
• Biopathlogy Sciences Medical Corp.
• Biotel Inr, LLC
• Mandeep Birak
• Erendira Blake

• Internal Medicine Physician in South San Francisco, CA
• Providers in South San Francisco, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.