Jean L Westendorf, ARNP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

039850 Issued in IA

Practice address

621 S Illinois Ave
Suite 100
Mason City, IA 50401

Phone

(641) 428-6900

Fax

(641) 428-6909

NPI assigned

Sep 16, 2005

Last updated

Jul 9, 2025By 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 identifiers 2

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IA

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, 1973

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

North Iowa Mercy ClinicsGroup PAC ID 7810809076, 304 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

81.55 of 100Reported as group

Quality

73.89

Promoting interoperability

93

Improvement activities

40

Cost

70.44

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jwestendorf3961377@direct.trinity-health.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.

• North Iowa Mercy Clinics

  dba MercyOne North Iowa Anesthesia Professional Services

  • Anesthesiology Physician
  • Mason City, IA
  • NPI 1780278242
  Medicare reassignment Care Compare group NPD
• North Iowa Mercy Clinics

  dba MercyOne Regency Family Medicine

  • Family Medicine Physician
  • Mason City, IA
  • NPI 1922118918
  NPD
• North Iowa Mercy Clinics

  dba MercyOne North Iowa Family and Sports Medicine

  • Sports Medicine (Family Medicine) Physician
  • Mason City, IA
  • NPI 1982300349
  NPD
• North Iowa Mercy Clinics

  dba MercyOne North Iowa Specialty Care

  • Internal Medicine Physician
  • Mason City, IA
  • NPI 1609806371
  NPD (past)

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

{
    "created_epoch": "1126828800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752019200000",
    "number": "1083609929",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "621 S ILLINOIS AVE",
            "address_2": "SUITE 103",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "50401",
            "telephone_number": "641-428-6900",
            "fax_number": "641-428-6909"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "621 S ILLINOIS AVE",
            "address_2": "SUITE 100",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "50401",
            "telephone_number": "641-428-6900",
            "fax_number": "641-428-6909"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WESTENDORF",
        "first_name": "JEAN",
        "middle_name": "L",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-09-16",
        "last_updated": "2025-07-09",
        "certification_date": "2025-07-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IA",
            "license": "039850",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IA",
            "license": "C039850",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0425017",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "WELLMARK BCBS",
            "identifier": "55760",
            "state": "IA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jwestendorf3961377@direct.trinity-health.org",
            "affiliation": "N",
            "endpointDescription": "MercyOne North Iowa Direct Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "621 S Illinois Ave",
            "address_2": "Suite 100",
            "city": "Mason City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "50401",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Ericha Marie Weberg, LPN
• Catherine Lorene Weiner, LISW
• Kathleen Weishaar, PA-C
• Wellsource
• Molly Elizabeth Wenthold, PA
• Jerrold L White, MD
• Kristin C White, M.D.
• Robert Thomas White, D.D.S.
• James Lee Whitehurst, CADC
• Jenna Lee Whittle, RD, LD

• Nurse Practitioner in Mason City, IA
• Providers in Mason City, IA by specialty
• Nurse Practitioner in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 2025; 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.