Individual provider Active NPI

David Lawrence Koss, D.D.S.

  • Pediatric Dentistry
  • Hartsdale, NY
National Provider Identifier
1689663312
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric DentistryTaxonomy code 1223P0221X
License
0033555 Issued in NY
Practice address
99 Fieldstone Dr
Hartsdale, NY 10530-1564
Phone
(914) 997-8820
Fax
(914) 997-9627
NPI assigned
Oct 15, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Dentistry 1223P0221X 0033555 NY Primary

Addresses

Primary practice location

99 Fieldstone Dr
Hartsdale, NY 10530-1564

Mailing address

99 Fieldstone Dr
Hartsdale, NY 10530-1564
Phone (914) 997-8820

Other identifiers 1

IdentifierTypeStateIssuer
00507671MedicaidNY

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
0033555NYMDPediatric Dentist

NPI Registry JSON

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

{
    "created_epoch": "1129334400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1689663312",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "99 FIELDSTONE DR",
            "city": "HARTSDALE",
            "state": "NY",
            "postal_code": "105301564",
            "telephone_number": "914-997-8820",
            "fax_number": "914-997-9627"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "99 FIELDSTONE DR",
            "city": "HARTSDALE",
            "state": "NY",
            "postal_code": "105301564",
            "telephone_number": "914-997-8820",
            "fax_number": "914-997-9627"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOSS",
        "first_name": "DAVID",
        "middle_name": "LAWRENCE",
        "name_prefix": "Dr.",
        "credential": "D.D.S.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223P0221X",
            "taxonomy_group": "",
            "desc": "Dentist, Pediatric Dentistry",
            "state": "NY",
            "license": "0033555",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00507671",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Hartsdale, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.