Sierra Elizabeth Loncki, RDN

Primary specialty

Registered DietitianTaxonomy code 133V00000X

License

5004 Issued in WI

Practice address

1836 South Ave
La Crosse, WI 54601-5429

Phone

(608) 783-7200

NPI assigned

Jul 25, 2022

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

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in WI

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Practice roles

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

• Gundersen Clinic LTD

  • Clinic/Center
  • La Crosse, WI
  • NPI 1851343115
  Medicare reassignment
• Gundersen Lutheran Medical Center Inc

  • Clinic/Center
  • La Crosse, WI
  • NPI 1225873458
  Medicare reassignment
• Viaro LLC

  • General Practice Physician
  • La Crosse, WI
  • NPI 1609515865
  NPD (past)
• Viaro Professional Arts LTD Health Care

  • General Practice Physician
  • La Crosse, WI
  • NPI 1669199907
  NPD (past)

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

{
    "created_epoch": "1658707200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777852800000",
    "number": "1679209498",
    "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": "608-783-7200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-783-7200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LONCKI",
        "first_name": "SIERRA",
        "middle_name": "ELIZABETH",
        "name_prefix": "Miss",
        "credential": "RDN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-07-25",
        "last_updated": "2026-05-04",
        "certification_date": "2026-05-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "WI",
            "license": "5004",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DEPARTMENT OF SAFETY AND PROFESSIONAL SERVICES",
            "identifier": "500429",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Ashley Corinne Logan, D.O.
• Madelynn M Logan, LPC-IT
• Monika L Loging, COTA
• Logistics Health Inc.
• Mary L Lokken, OTR
• Thomas A Londergan, MD
• Maddisen Payge Long-Pero, PA-C
• Lory Anne Long, RDH
• Richard E Long, MD
• Sarah Ann Long, PH.D.

• Registered Dietitian in La Crosse, WI
• Providers in La Crosse, WI by specialty
• Registered Dietitian in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.