Olivia R Portnov

Primary specialty

Speech-Language PathologistTaxonomy code 235Z00000X

License

14481708 Issued in WI

Practice address

4114 Donald Dr
Madison, WI 53704-2822

Phone

(608) 204-7940

NPI assigned

Feb 27, 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": "1772150400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772150400000",
    "number": "1659226264",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4114 DONALD DR",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537042822"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4114 DONALD DR",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537042822",
            "telephone_number": "608-204-7940"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PORTNOV",
        "first_name": "OLIVIA",
        "middle_name": "R",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-02-27",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "235Z00000X",
            "taxonomy_group": "",
            "desc": "Speech-Language Pathologist",
            "state": "WI",
            "license": "14481708",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James F Porter, MD
• Katherine I Porter, DO
• Ryan F Porter, MD
• Sarah Emma Porter, PSYD
• Edward Portillo, PHARMD
• Shawn Halton Portwood, RDN
• Angie Posada Vargas, DO
• Michael E Poser
• Lynn Posick, CNP
• Possibilities at Home Inc

• Speech-Language Pathologist in Madison, WI
• Providers in Madison, 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 Feb 27, 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.