Individual provider Active NPI

Ariane Ernst, LCSW

  • Clinical Social Worker
  • New York, NY
National Provider Identifier
1598473969
Registry record updated Mar 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
102063 Issued in NY
Practice address
220 5TH Ave FL 11
New York, NY 10001-8017
Phone
(718) 673-2258
NPI assigned
Nov 14, 2022
Last updated
Mar 23, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 23, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X 102063 NY Primary
Social Worker 104100000X 118045 NY

Addresses

Primary practice location

220 5TH Ave FL 11
New York, NY 10001-8017

Mailing address

220 5TH Ave FL 11
New York, NY 10001-8017

Other names 1

  • Ariane Chretien Former name

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
118045NYMDSocial Worker
102063NYMDClinical Social Worker

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1668384000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774224000000",
    "number": "1598473969",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "220 5TH AVE FL 11",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100018017"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "220 5TH AVE FL 11",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100018017",
            "telephone_number": "718-673-2258"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ERNST",
        "first_name": "ARIANE",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-11-14",
        "last_updated": "2026-03-23",
        "certification_date": "2026-03-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NY",
            "license": "102063",
            "primary": true
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NY",
            "license": "118045",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ARIANE",
            "last_name": "CHRETIEN",
            "credential": "MA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in New York, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 23, 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.