David William Day, LMFT

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

143223 Issued in CA

Practice address

515 E 1St St Ste D
Tustin, CA 92780-3335

Phone

(949) 226-6100

NPI assigned

Mar 4, 2026

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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1772582400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772582400000",
    "number": "1477409332",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8562 SALT LAKE DR",
            "city": "HUNTINGTON BEACH",
            "state": "CA",
            "postal_code": "926463227"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "515 E 1ST ST STE D",
            "city": "TUSTIN",
            "state": "CA",
            "postal_code": "927803335",
            "telephone_number": "949-226-6100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DAY",
        "first_name": "DAVID",
        "middle_name": "WILLIAM",
        "name_prefix": "Mr.",
        "credential": "LMFT",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2026-03-04",
        "last_updated": "2026-03-04",
        "certification_date": "2026-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "143223",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Denise Evelyn Davis, MFT
• Elizabeth Davis, LCSW
• Kimberly Davis
• Dawn M. Terashita, PC
• Dawn Thanh Vu, OD, an Optometric Professional Corporation
• Liliana Day
• Natalie Alise Day, MSW
• Lize Tibirica De Carvalho, PSYD
• Johanna Camille De Jesus, FNP-C
• Evelyn Johana De la Rosa, LCSW88663

• Marriage & Family Therapist in Tustin, CA
• Providers in Tustin, 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 Mar 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.