Amber Marzen, ARNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

A165787 Issued in IA

Practice address

203 S 2ND St
Sheffield, IA 50475-5008

Phone

(641) 892-4495

Fax

(641) 892-4278

NPI assigned

Sep 24, 2021

Last updated

Jul 15, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

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, 2021

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)

Hospital & facility affiliations

• Mercyone North Iowa Medical Center Hospital, Mason City, IA, CCN 160064

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

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: amarzen3951318@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 Mercy Urgent Care

  • Family Medicine Physician
  • Mason City, IA
  • NPI 1588070072
  NPD
• North Iowa Mercy Clinics

  dba MercyOne North Iowa Family and Sports Medicine

  • Sports Medicine (Family Medicine) Physician
  • Mason City, IA
  • NPI 1982300349
  NPD
• Floyd County Memorial Hospital Commission

  • Critical Access Hospital
  • Charles City, IA
  • NPI 1265402390
  NPD (past)

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

• Mercy Health Services-Iowa Corp

  dba Mercy Medical Center-North Iowa

  • Rural Acute Care Hospital
  • Mason City, IA
  • NPI 1467537886
  Care Compare affiliation

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

{
    "created_epoch": "1632441600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752537600000",
    "number": "1902577331",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "203 S 2ND ST",
            "city": "SHEFFIELD",
            "state": "IA",
            "postal_code": "504755008",
            "telephone_number": "641-892-4495"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "203 S 2ND ST",
            "city": "SHEFFIELD",
            "state": "IA",
            "postal_code": "504755008",
            "telephone_number": "641-892-4495",
            "fax_number": "641-892-4278"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARZEN",
        "first_name": "AMBER",
        "credential": "ARNP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-09-24",
        "last_updated": "2025-07-15",
        "certification_date": "2025-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IA",
            "license": "A165787",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "amarzen3951318@direct.trinity-health.org",
            "affiliation": "N",
            "endpointDescription": "MercyOne North Iowa Direct Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "203 S 2nd St",
            "city": "Sheffield",
            "state": "IA",
            "country_code": "US",
            "postal_code": "504755008",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Anna M. Clausen, D.C.
• Innate, Inc. (Clausen Chiropractic)
• Mercy Health Services-Iowa Corp
• Joy Moretz
• Ruth Ann Nelson, R.PH.
• North Iowa Mercy Clinics (MercyOne Sheffield Family Medicine)
• Nancy K Plagge, RPH

• Family Nurse Practitioner in Sheffield, IA
• Providers in Sheffield, IA by specialty
• Family Nurse Practitioner in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 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.