Katherine Seybold Ritter

Primary specialty

Speech-Language PathologistTaxonomy code 235Z00000X

Practice address

1900 Washington St
Grafton, WI 53024-2103

Phone

(262) 376-5400

NPI assigned

May 26, 2022

Last updated

Jun 3, 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

Other names 1

• Katherine Elaine Seybold Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1653523200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780444800000",
    "number": "1295473379",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1900 WASHINGTON ST",
            "city": "GRAFTON",
            "state": "WI",
            "postal_code": "530242103"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1900 WASHINGTON ST",
            "city": "GRAFTON",
            "state": "WI",
            "postal_code": "530242103",
            "telephone_number": "262-376-5400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RITTER",
        "first_name": "KATHERINE",
        "middle_name": "SEYBOLD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-05-26",
        "last_updated": "2026-06-03",
        "certification_date": "2026-06-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "235Z00000X",
            "taxonomy_group": "",
            "desc": "Speech-Language Pathologist",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KATHERINE",
            "last_name": "SEYBOLD",
            "middle_name": "ELAINE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

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• Speech-Language Pathologist in Grafton, WI
• Providers in Grafton, WI by specialty
• Speech-Language Pathologist in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 3, 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.