Natasja Haffner, LMSW

Primary specialty

Social WorkerTaxonomy code 104100000X

License

2026007525 Issued in MO

Practice address

1345 Smizer Mill Rd
Fenton, MO 63026-7305

Phone

(636) 496-4030

NPI assigned

Apr 21, 2026

Sex

Female

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

State licenses

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

{
    "created_epoch": "1776729600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776729600000",
    "number": "1639014236",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2606 LOUISIANA AVE APT 2N",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631181115"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1345 SMIZER MILL RD",
            "city": "FENTON",
            "state": "MO",
            "postal_code": "630267305",
            "telephone_number": "636-496-4030"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAFFNER",
        "first_name": "NATASJA",
        "credential": "LMSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-04-21",
        "last_updated": "2026-04-21",
        "certification_date": "2026-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "MO",
            "license": "2026007525",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Jeffrey J Hallazgo, M.D.
• Cassandra A Halsted, DPT
• Taylor Halteman, DPT

• Social Worker in Fenton, MO
• Providers in Fenton, MO by specialty
• Social Worker in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 21, 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.