Amanda Mae Hartzell Middendorf, APNP

Primary specialty

Gerontology Nurse PractitionerTaxonomy code 363LG0600X

License

11435 Issued in WI

Practice address

405 S Highway 44 76
Caledonia, MN 55921-1861

Phone

(608) 668-9118

Fax

(608) 305-8746

NPI assigned

Nov 10, 2021

Last updated

Feb 2, 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 2

Addresses

Other names 1

• Amanda Mae Middendorf Other name

Medicare fee-for-service enrollment

Enrolled in WI, MN2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 2

Specialty

Nurse Practitioner

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: amiddendorf541229@direct.gundersenhealth.org

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.

• Traveling Health LLC

  • Gerontology Nurse Practitioner
  • Caledonia, MN
  • NPI 1861291536

  WI

  Medicare reassignment NPD Authorized official
• Gundersen Lutheran Medical Center Inc

  dba Emplify Health Hamilton Clinic

  • Clinic/Center
  • La Crosse, WI
  • NPI 1225873458
  Medicare reassignment NPD
• Infinite Medical PC

  • Family Medicine Physician
  • Bristol, RI
  • NPI 1407483175

  MN, WI

  Medicare reassignment NPD
• Gundersen Lutheran Medical Center Inc

  dba Emplify Health La Crosse Hospital

  • General Acute Care Hospital
  • La Crosse, WI
  • NPI 1376593442
  NPD
• Gundersen Lutheran Medical Center, Inc

  dba Emplify Health Onalaska Behavioral Health

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Onalaska, WI
  • NPI 1871837567
  NPD
• Metro Infectious Disease Consultants, LLC

  • Infectious Disease Physician
  • Plymouth, MI
  • NPI 1841530250
  NPD (past)

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

{
    "created_epoch": "1636502400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769990400000",
    "number": "1558027052",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 S HIGHWAY 44 76",
            "city": "CALEDONIA",
            "state": "MN",
            "postal_code": "559211861",
            "telephone_number": "608-668-9118",
            "fax_number": "608-305-8746"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "405 S HIGHWAY 44 76",
            "city": "CALEDONIA",
            "state": "MN",
            "postal_code": "559211861",
            "telephone_number": "608-668-9118",
            "fax_number": "608-305-8746"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARTZELL MIDDENDORF",
        "first_name": "AMANDA",
        "middle_name": "MAE",
        "credential": "APNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-11-10",
        "last_updated": "2026-02-02",
        "certification_date": "2026-02-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "WI",
            "license": "11435",
            "primary": false
        },
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "WI",
            "license": "11435",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "AMANDA",
            "last_name": "MIDDENDORF",
            "middle_name": "MAE",
            "credential": "APNP",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

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• Keli Gwost, MS
• Abraham Joseph Hammell, D.O.
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• Sarah Ruth Herman, DDS
• Hiawatha Valley Mental Health Center
• Houston County Auditor (Houston County Public Health)
• Houston County Human Services

• Gerontology Nurse Practitioner in Caledonia, MN
• Providers in Caledonia, MN by specialty
• Gerontology Nurse Practitioner in Minnesota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.