NPIMap

Organization Active NPI

Hayner Internal Medicine Associates, PLLC

  • Internal Medicine Physician
  • Howell, MI
National Provider Identifier
1013580836
Registry record updated Apr 30, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
HAYNER INTERNAL MEDICINE ASSOCIATES, PLLC
Practice address
1221 Byron Rd Ste 2And3
Howell, MI 48843-1069
Phone
(517) 273-9090
Fax
(517) 518-8629
NPI assigned
Jul 20, 2021
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Apr 30, 2026

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

Authorized official

Name
Denise Kozlowski
Title
Practice Manager
Phone
(517) 273-9090

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207R00000X Primary

Addresses

Primary practice location

1221 Byron Rd Ste 2And3
Howell, MI 48843-1069

Mailing address

PO Box 709
Pinckney, MI 48169-0709
Phone (517) 273-9090

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address denise@jameshaynermd.com Direct

National Provider Directory

National Provider Directory

Locations

1221 Byron Rd
Ste 2
Howell, MI 48843
Phone (517) 273-9090

1225 W Grand River Ave
Ste 200
Howell, MI 48843
Phone (517) 273-9090

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/23126/brand/1/csg/1/fhir/r4

Practitioners & affiliated clinicians

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1626739200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1777507200000",
    "number": "1013580836",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 709",
            "city": "PINCKNEY",
            "state": "MI",
            "postal_code": "481690709",
            "telephone_number": "517-273-9090",
            "fax_number": "517-518-8629"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 BYRON RD STE 2AND3",
            "city": "HOWELL",
            "state": "MI",
            "postal_code": "488431069",
            "telephone_number": "517-273-9090",
            "fax_number": "517-518-8629"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "HAYNER INTERNAL MEDICINE ASSOCIATES, PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2021-07-20",
        "last_updated": "2026-04-30",
        "certification_date": "2026-04-30",
        "status": "A",
        "authorized_official_last_name": "KOZLOWSKI",
        "authorized_official_first_name": "DENISE",
        "authorized_official_title_or_position": "PRACTICE MANAGER",
        "authorized_official_telephone_number": "517-273-9090"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "denise@jameshaynermd.com",
            "affiliation": "N",
            "endpointDescription": "Practice Manager",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "1221 Byron Rd Ste 2And3",
            "city": "Howell",
            "state": "MI",
            "country_code": "US",
            "postal_code": "488431069",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Howell, MI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.