Individual provider Active NPI

Marianna Chrysiliou, CASAC2

  • Addiction (Substance Use Disorder) Counselor
  • Brooklyn, NY
National Provider Identifier
1902749740
Registry record updated Apr 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X
License
42115 Issued in NY
Practice address
25 Chapel St FL 7
Brooklyn, NY 11201-1954
Phone
(718) 858-9658
Fax
(718) 858-9670
NPI assigned
Apr 14, 2026
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 14, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Counselor 101YA0400X 42115 NY Primary

Addresses

Primary practice location

25 Chapel St FL 7
Brooklyn, NY 11201-1954

Mailing address

4509 25TH Ave Apt 2
Astoria, NY 11103-1015
Phone (718) 858-9658

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
42115NYMDAddiction (Substance Use Disorder) Counselor

NPI Registry JSON

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

{
    "created_epoch": "1776124800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776124800000",
    "number": "1902749740",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4509 25TH AVE APT 2",
            "city": "ASTORIA",
            "state": "NY",
            "postal_code": "111031015",
            "telephone_number": "718-858-9658",
            "fax_number": "718-858-9670"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "25 CHAPEL ST FL 7",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112011954",
            "telephone_number": "718-858-9658",
            "fax_number": "718-858-9670"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHRYSILIOU",
        "first_name": "MARIANNA",
        "credential": "CASAC2",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-04-14",
        "last_updated": "2026-04-14",
        "certification_date": "2026-04-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "NY",
            "license": "42115",
            "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 Apr 14, 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.