Individual provider Active NPI

Gregory Peter Slonim

  • Registered Nurse
  • Brooklyn, NY
National Provider Identifier
1336026897
Registry record updated Aug 18, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered NurseTaxonomy code 163W00000X
License
823079 Issued in NY
Practice address
1358 56TH St
Brooklyn, NY 11219-4616
Phone
(718) 851-7100
NPI assigned
Aug 18, 2025
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 18, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Case Management Registered Nurse 163WC0400X 823079 NY
Registered Nurse 163W00000X 823079 NY Primary

Addresses

Primary practice location

1358 56TH St
Brooklyn, NY 11219-4616

Mailing address

1358 56TH St
Brooklyn, NY 11219-4616
Phone (718) 851-7100

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
823079NYMDCase Management Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Jewish Board of Family and Children'S Services PastSince Aug 25, 2025 Accepting new patients

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1755475200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755475200000",
    "number": "1336026897",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1358 56TH ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112194616",
            "telephone_number": "718-851-7100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1358 56TH ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112194616",
            "telephone_number": "718-851-7100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SLONIM",
        "first_name": "GREGORY",
        "middle_name": "PETER",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-08-18",
        "last_updated": "2025-08-18",
        "certification_date": "2025-08-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WC0400X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Case Management",
            "state": "NY",
            "license": "823079",
            "primary": false
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "NY",
            "license": "823079",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Brooklyn, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 18, 2025; 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.