Robert Guillen III, RN

Primary specialty

Registered NurseTaxonomy code 163W00000X

License

95208257 Issued in CA

Practice address

1367 Yosemite Cir
Clayton, CA 94517-2121

Phone

(415) 604-7156

NPI assigned

Oct 8, 2026

Last updated

Oct 8, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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

{
    "created_epoch": "1791417600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791417600000",
    "number": "1528963709",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1367 YOSEMITE CIR",
            "city": "CLAYTON",
            "state": "CA",
            "postal_code": "945172121"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1367 YOSEMITE CIR",
            "city": "CLAYTON",
            "state": "CA",
            "postal_code": "945172121",
            "telephone_number": "415-604-7156"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUILLEN",
        "first_name": "ROBERT",
        "name_suffix": "III",
        "credential": "RN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-10-08",
        "last_updated": "2026-10-08",
        "certification_date": "2026-10-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "CA",
            "license": "95208257",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Joseph J. Gardner, LCSW
• Randell F Gardner, D.D.S.
• Matthew John Godwin, SUDRC
• Kathryn Graham, OMT
• Keaton Michael Guigneaux, SUDRC
• Angelo Gutierrez, LVN
• James W Hall
• Denise Haverty
• Jesus Sosa Hernandez, COUNSELOR
• Michael Inmann Hoffert

• Registered Nurse in Clayton, CA
• Providers in Clayton, CA by specialty
• Registered Nurse in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 8, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.