Mehgan L Ullsperger, MSN, APNP, AGNP-C

Primary specialty

Gerontology Nurse PractitionerTaxonomy code 363LG0600X

License

17450 Issued in WI

Practice address

3925 N Gateway Dr
Appleton, WI 54913-7863

Phone

(920) 830-6877

NPI assigned

Dec 9, 2024

Last updated

Sep 9, 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 3

Addresses

Medicare fee-for-service enrollment

Enrolled in WI

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 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Thedacare, IncorporatedGroup PAC ID 1759294887, 654 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Thedacare Regional Med Ctr - Neenah Hospital, Neenah, WI, CCN 520045

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science - Nursing, Nurse Practitioner

State licenses

Practice roles

Locations

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.

• Thedacare, Incorporated

  dba ThedaCare Physicians

  • Family Medicine Physician
  • New London, WI
  • NPI 1376656959
  Medicare reassignment Care Compare group NPD
• Thedacare Medical Center - Shawano, Inc.

  • Critical Access Hospital
  • Shawano, WI
  • NPI 1548260839
  NPD (past)
• Thedacare, Incorporated

  dba ThedaCare Behavioral Health

  • Counselor
  • Menasha, WI
  • NPI 1306959515
  NPD (past)

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

• Thedacare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Neenah, WI
  • NPI 1023472842
  Care Compare affiliation
• Thedacare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Menasha, WI
  • NPI 1720434806
  Care Compare affiliation
• Thedacare Regional Medical Center-Neenah, Inc.

  • General Acute Care Hospital
  • Neenah, WI
  • NPI 1518993880
  Care Compare affiliation
• Thedacare Regional Medical Center-Neenah, Inc.

  • General Acute Care Hospital
  • Oshkosh, WI
  • NPI 1861943409
  Care Compare affiliation
• Thedcare Regional Medical Center - Neenah, Inc.

  • General Acute Care Hospital
  • Oshkosh, WI
  • NPI 1679937494
  Care Compare affiliation

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

{
    "created_epoch": "1733702400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788912000000",
    "number": "1164238630",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 NEENAH CTR",
            "city": "NEENAH",
            "state": "WI",
            "postal_code": "549563070",
            "telephone_number": "920-830-5900",
            "fax_number": "920-830-5910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3925 N GATEWAY DR",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549137863",
            "telephone_number": "920-830-6877"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "333 N Green Bay Rd",
            "address_purpose": "LOCATION",
            "city": "Neenah",
            "state": "WI",
            "postal_code": "549561954",
            "country_code": "US",
            "telephone_number": "920-729-6088",
            "fax_number": "920-729-6484",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ULLSPERGER",
        "first_name": "MEHGAN",
        "middle_name": "L",
        "name_prefix": "Miss",
        "credential": "MSN, APNP, AGNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-12-09",
        "last_updated": "2026-09-09",
        "certification_date": "2026-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "WI",
            "license": "17450",
            "primary": false
        },
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "WI",
            "license": "17450",
            "primary": true
        },
        {
            "code": "363LP2300X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Primary Care",
            "state": "WI",
            "license": "17450-33",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Summer Uchacz, RN,BSN
• Brittany Uitenbroek, AU.D.
• Tabitha Christine Uitenbroek, APNP
• Amanda Jane Ujazdowski, PA-C
• Peter F Ullrich Jr., MD
• Kaitlyn Marie Ulrich, LPC-IT
• Umoja Health Services
• Adrian Paolo Umpierrez de Reguero, MD
• United Anesthesia, S.C.
• Unity Way Transportation LLC

• Gerontology Nurse Practitioner in Appleton, WI
• Providers in Appleton, WI by specialty
• Gerontology Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 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.