Guillermo Siordia

Primary specialty

Day Training/Habilitation SpecialistTaxonomy code 373H00000X

Practice address

3875 S Western Ave
Los Angeles, CA 90062-1105

Phone

(323) 290-4367

NPI assigned

Nov 13, 2025

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

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1762992000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781654400000",
    "number": "1689534547",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9345 3/4 WASHBURN RD",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902422910",
            "telephone_number": "562-583-9207"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3875 S WESTERN AVE",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900621105",
            "telephone_number": "323-290-4367"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIORDIA",
        "first_name": "GUILLERMO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-11-13",
        "last_updated": "2026-06-17",
        "certification_date": "2026-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "373H00000X",
            "taxonomy_group": "",
            "desc": "Day Training/Habilitation Specialist",
            "state": "CA",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Siobhan Newman MD Inc
• Dana Sion, LAC
• Gilda Liseth Sion
• Benjamin Payam Sionat
• Fernando Siordia
• Siotame Lasitani, M.D., Inc.
• Matthew Siow, MD, MBA
• Quintin Edward Sipert Sr.
• Kelly Rae Siplinger, RN
• Fareeha Sipra, NURSE PRACTIONER

• Day Training/Habilitation Specialist in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Day Training/Habilitation Specialist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 17, 2026; 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.