NPIMap

Individual provider Active NPI

Jennifer Castle, ARNP

  • Clinical Nurse Specialist
  • Mason City, IA
National Provider Identifier
1871031302
Registry record updated Jul 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Nurse SpecialistTaxonomy code 364S00000X
License
W107452 Issued in IA
Practice address
1000 4TH St SW
Mason City, IA 50401-2800
Phone
(641) 428-6300
Fax
(641) 428-6347
NPI assigned
Feb 3, 2017
Last updated
Jul 15, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 15, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Nurse Specialist 364S00000X W107452 IA Primary

Addresses

Primary practice location

1000 4TH St SW
Mason City, IA 50401-2800

Mailing address

1000 4TH St SW
Mason City, IA 50401-2800

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address jcastle84859@trinityhealth.direct-ci-cert.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20170406003026 IA Practitioner - Nurse Practitioner 2961788856 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2016
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)

1000 4TH St SW
Mason City, IA 50401-2800

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
95.27 of 100Reported as apm
Quality
85.98
Promoting interoperability
100
Improvement activities
40

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

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
W107452IAMDClinical Nurse Specialist

Practice roles

OrganizationSpecialtyStatusNew patients
North Iowa Mercy Clinics Current Accepting new patients
North Iowa Mercy Clinics CurrentSince Mar 23, 2017 Accepting new patients
North Iowa Mercy Clinics CurrentSince Mar 23, 2017 Accepting new patients
Floyd County Memorial Hospital Commission Past Accepting new patients
North Iowa Mercy Clinics Past Accepting new patients

Locations

1000 4th St SW
Mason City, IA 50401
Phone (641) 424-6704

Interoperability endpoints

  • Direct secure messaging: jcastle84859@trinityhealth.direct-ci-cert.com

Organizations & group practices 5

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.

Hospital & facility affiliations 5

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

NPI Registry JSON

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

{
    "created_epoch": "1486080000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752537600000",
    "number": "1871031302",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 4TH ST SW",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 4TH ST SW",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012800",
            "telephone_number": "641-428-6300",
            "fax_number": "641-428-6347"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASTLE",
        "first_name": "JENNIFER",
        "name_prefix": "Ms.",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-02-03",
        "last_updated": "2025-07-15",
        "certification_date": "2025-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "364S00000X",
            "taxonomy_group": "",
            "desc": "Clinical Nurse Specialist",
            "state": "IA",
            "license": "W107452",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jcastle84859@trinityhealth.direct-ci-cert.com",
            "affiliation": "N",
            "endpointDescription": "MercyOne North Iowa Direct Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1000 4th St SW",
            "city": "Mason City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "504012800",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Mason City, IA

Sources for this page

Verify at the official NPI Registry.