Alison Mastin

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

4704250930 Issued in MI

Practice address

35 Michigan St NE FL 2
Grand Rapids, MI 49503-2514

Phone

(616) 267-1925

Fax

(616) 267-1005

NPI assigned

Aug 5, 2014

Last updated

May 8, 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 1

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in MI

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

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Interoperability endpoints

• Direct secure messaging: amastin89418@epic00.corewelldirect.org
• Direct secure messaging: amastin89418@epic00.shdirect.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.

• Spectrum Health Hospitals

  dba Corewell Health Grand Rapids Hospitals

  • Hospitalist Physician
  • Grand Rapids, MI
  • NPI 1558407189
  Medicare reassignment

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

{
    "created_epoch": "1407196800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746662400000",
    "number": "1821407750",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "address_2": "MC 845",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "35 MICHIGAN ST NE FL 2",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032514",
            "telephone_number": "616-267-1925",
            "fax_number": "616-267-1005"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTIN",
        "first_name": "ALISON",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-08-05",
        "last_updated": "2025-05-08",
        "certification_date": "2025-05-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MI",
            "license": "4704250930",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "amastin89418@epic00.shdirect.org",
            "affiliation": "N",
            "address_1": "100 Michigan St NE",
            "address_2": "10th Floor MC 085",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "100 Michigan St NE",
            "address_2": "10th Floor MC 085",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Margaret Masters, NP-C
• Nicholas Masters
• Caitlin Elizabeth Masterson, M.S., OTR/L
• Chloe Casanave Masterson, PHARMD
• Gilbert A Masterson, MD
• Julie Mata, LLBSW
• Ruth Mata
• Thomas M Matelic, MD
• Jesmarie Yoli Mateo
• Alaina Ruth Mater, BSN,RN

• Nurse Practitioner in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Nurse Practitioner in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 8, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.