Diana Sieber

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

Practice address

4115 Boardwalk Dr
Fort Collins, CO 80525-5945

Phone

(970) 493-4580

NPI assigned

Nov 2, 2026

Last updated

Nov 2, 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

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

{
    "created_epoch": "1793577600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793577600000",
    "number": "1912806407",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1500 LA REATTA CT",
            "city": "FORT COLLINS",
            "state": "CO",
            "postal_code": "805214060"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4115 BOARDWALK DR",
            "city": "FORT COLLINS",
            "state": "CO",
            "postal_code": "805255945",
            "telephone_number": "970-493-4580"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEBER",
        "first_name": "DIANA",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2026-11-02",
        "last_updated": "2026-11-02",
        "certification_date": "2026-11-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CO",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Abby Sickels
• Kourtney Sidener
• Kate Meredith Sidgwick, RD
• Colleen K Sidhu, LCSW
• Lindsay Siebenaler, CRNA
• Tiffany M Siefken, LCSW/LISW
• Kimberly Lynne Siegel, MD
• Leah Beth Siegel, PA-C
• Linda Marie Siegrist, RN
• Heather Sieler, PT

• Clinical Social Worker in Fort Collins, CO
• Providers in Fort Collins, 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 Nov 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.