NPIMap

Individual provider Active NPI

Mary Katherine Kosowski, A-GNP-C

  • Adult Health Nurse Practitioner
  • West Seneca, NY
National Provider Identifier
1558937441
Registry record updated Aug 28, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Health Nurse PractitionerTaxonomy code 363LA2200X
License
F309522-01 Issued in NY
Practice address
600 Harlem Rd
West Seneca, NY 14224-1151
Phone
(716) 332-2121
Fax
(716) 332-2122
NPI assigned
Jun 1, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 28, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Adult Health Nurse Practitioner 363LA2200X F309522-01 NY Primary

Addresses

Primary practice location

600 Harlem Rd
West Seneca, NY 14224-1151

Mailing address

600 Harlem Rd
West Seneca, NY 14224-1151
Phone (716) 332-2121

Other practice location 1

34 Benwood Ave
Buffalo, NY 14214-1761
Phone (716) 986-9199

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
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
I20220208000559 NY Practitioner - Nurse Practitioner 8527451921 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Trinity Medical Wny PCGroup PAC ID 5193907517, 207 clinicians

Practice addresses (Care Compare)

600 Harlem Rd
West Seneca, NY 14224-1151
Phone (716) 332-2121

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
F309522-01NYMDAdult Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Community Health Center of Buffalo, Inc. CurrentSince Sep 28, 2021 Accepting new patients
Trinity Medical Wny PC CurrentSince Aug 15, 2022 Accepting new patients
Trinity Medical Wny PC Adult Health CurrentSince Aug 15, 2022 Accepting new patients

Locations

34 Benwood Ave
Buffalo, NY 14214
Phone (716) 898-4449

144 Genesee St
Fl 3
Buffalo, NY 14203
Phone (716) 601-3690

3435 Bailey Ave
Buffalo, NY 14215
Phone (716) 835-2966

600 Harlem Rd
West Seneca, NY 14224
Phone (716) 332-2121

Interoperability endpoints

  • Direct secure messaging: mkosowski392738@direct.chsbuffalo.org
  • FHIR API: https://fhir4.healow.com/fhir/r4/HDJFBA

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 14

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

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1622505600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756339200000",
    "number": "1558937441",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 HARLEM RD",
            "city": "WEST SENECA",
            "state": "NY",
            "postal_code": "142241151",
            "telephone_number": "716-332-2121",
            "fax_number": "716-332-2122"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 HARLEM RD",
            "city": "WEST SENECA",
            "state": "NY",
            "postal_code": "142241151",
            "telephone_number": "716-332-2121",
            "fax_number": "716-332-2122"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "34 Benwood Ave",
            "address_purpose": "LOCATION",
            "city": "Buffalo",
            "state": "NY",
            "postal_code": "142141761",
            "country_code": "US",
            "telephone_number": "716-986-9199",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KOSOWSKI",
        "first_name": "MARY KATHERINE",
        "name_prefix": "Mrs.",
        "credential": "A-GNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-06-01",
        "last_updated": "2025-08-28",
        "certification_date": "2025-08-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "NY",
            "license": "F309522-01",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in West Seneca, NY

Sources for this page

Verify at the official NPI Registry.