Individual provider Active NPI

Hayley Larson, RD, LD

  • Registered Dietitian
  • Onalaska, WI
National Provider Identifier
1326901687
Registry record updated Dec 8, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered DietitianTaxonomy code 133V00000X
License
6271-29 Issued in WI
Practice address
3111 Gundersen Dr
Onalaska, WI 54650-8405
Phone
(508) 782-7300
NPI assigned
Dec 4, 2025
Last updated
Dec 8, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 8, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Registered Dietitian 133V00000X 6271-29 WI Primary

Addresses

Primary practice location

3111 Gundersen Dr
Onalaska, WI 54650-8405

Mailing address

1836 South Ave
La Crosse, WI 54601-5429
Phone (608) 782-7300

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251218002891 WI Practitioner - Registered Dietitian Or Nutrition Professional 6305331265 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Registered Dietitian Or Nutrition Professional
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

3111 Gundersen Dr
Onalaska, WI 54650-8447
Phone (608) 782-7300

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
6271-29WIMDRegistered Dietitian

Practice roles

OrganizationSpecialtyStatusNew patients
Gundersen Lutheran Medical Center Inc CurrentSince Dec 8, 2025 Accepting new patients
Gundersen Lutheran Medical Center, Inc CurrentSince Dec 8, 2025 Accepting new patients

Locations

1836 South Ave
La Crosse, WI 54601
Phone (608) 788-8102

1910 South Ave
La Crosse, WI 54601
Phone (608) 775-2287

3111 Gundersen Dr
Onalaska, WI 54650
Phone (608) 775-8100

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1764806400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765152000000",
    "number": "1326901687",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-782-7300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3111 GUNDERSEN DR",
            "city": "ONALASKA",
            "state": "WI",
            "postal_code": "546508405",
            "telephone_number": "508-782-7300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LARSON",
        "first_name": "HAYLEY",
        "credential": "RD, LD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-12-04",
        "last_updated": "2025-12-08",
        "certification_date": "2025-12-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "WI",
            "license": "6271-29",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Onalaska, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 8, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.