Seth Tumbleson, SWC

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

SWC.0000002510 Issued in CO

Practice address

7780 S Broadway Ste 300
Littleton, CO 80122-2633

Phone

(970) 310-3406

Fax

(888) 965-4615

NPI assigned

Jun 26, 2025

Last updated

Jun 2, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 3

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": "1750896000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780358400000",
    "number": "1649168592",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7780 S BROADWAY STE 300",
            "city": "LITTLETON",
            "state": "CO",
            "postal_code": "801222633",
            "telephone_number": "970-310-3406",
            "fax_number": "888-965-4615"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7780 S BROADWAY STE 300",
            "city": "LITTLETON",
            "state": "CO",
            "postal_code": "801222633",
            "telephone_number": "970-310-3406",
            "fax_number": "888-965-4615"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2260 W Trilby Rd",
            "address_purpose": "LOCATION",
            "city": "Fort Collins",
            "state": "CO",
            "postal_code": "805269650",
            "country_code": "US",
            "telephone_number": "970-494-4200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3521 Stanford Rd Apt 315",
            "address_purpose": "LOCATION",
            "city": "Fort Collins",
            "state": "CO",
            "postal_code": "805254082",
            "country_code": "US",
            "telephone_number": "970-430-6161",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TUMBLESON",
        "first_name": "SETH",
        "credential": "SWC",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-06-26",
        "last_updated": "2026-06-02",
        "certification_date": "2026-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CO",
            "license": "SWC.0000002510",
            "primary": true
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CO",
            "license": "SWC.0000002510",
            "primary": false
        },
        {
            "code": "171M00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Case Manager/Care Coordinator",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Clinical Social Worker in Littleton, CO
• Providers in Littleton, CO by specialty
• Clinical Social Worker in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 2, 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.