Gretchen Thorson, RD,LD,CDE

Primary specialty

Registered DietitianTaxonomy code 133V00000X

License

01317 Issued in IA

Practice address

1515 W Pleasant St
Knoxville, IA 50138-3354

Phone

(641) 842-3101

NPI assigned

May 8, 2006

Last updated

Jul 13, 2026By the provider in NPPES

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": "1147046400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1053360081",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "115 INDEPENDENCE ST",
            "city": "PELLA",
            "state": "IA",
            "postal_code": "502191850",
            "telephone_number": "641-620-1706"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1515 W PLEASANT ST",
            "city": "KNOXVILLE",
            "state": "IA",
            "postal_code": "501383354",
            "telephone_number": "641-842-3101"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THORSON",
        "first_name": "GRETCHEN",
        "credential": "RD,LD,CDE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "IA",
            "license": "01317",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nancy Kay Tegeler, CADC
• Sonya Test, RN
• The Other Medical Clinic
• Rhonda J Thompson, LISW
• Sarah Thompson
• Katheryne Jean Todd, ARNP
• Todd A Treimer, DO
• Jessica Lynn Van Vark, LMSW
• Michael David Vannatta, DO
• Veterans Health Administration

• Registered Dietitian in Knoxville, IA
• Providers in Knoxville, IA by specialty
• Registered Dietitian in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.