Diana Lee De Guzman

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

164692 Issued in CA

Practice address

650 N Delaware St
San Mateo, CA 94401-1732

Phone

(650) 558-2376

NPI assigned

Nov 21, 2025

Last updated

Aug 4, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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": "1763683200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785801600000",
    "number": "1699636225",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "650 N DELAWARE ST",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944011732",
            "telephone_number": "650-558-2376"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "650 N DELAWARE ST",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944011732",
            "telephone_number": "650-558-2376"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DE GUZMAN",
        "first_name": "DIANA",
        "middle_name": "LEE",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-11-21",
        "last_updated": "2026-08-04",
        "certification_date": "2026-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "164692",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Zane Adam Davis
• Joshua Craig Hernandez Daya
• Nichole De Anda
• Caitlin De Castro
• Emily De Dios
• Olivia De Guzman, RN
• Samantha De Guzman
• Emerson Manuel De Jesus, M.D.
• Katherine Rose Yap De Jong, M.D.
• Andrea De la Cruz

• Marriage & Family Therapist in San Mateo, CA
• Providers in San Mateo, CA by specialty
• Marriage & Family Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 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.