Flo Marshak, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

R0520641 Issued in NY

Practice address

50 Karl Ave
Ste 205
Smithtown, NY 11787

Phone

(631) 724-5500

Fax

(631) 724-5500

NPI assigned

Feb 8, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Other names 1

• Ms. Flora Marshak Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

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

{
    "created_epoch": "1139356800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1265405641",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 KARL AVE",
            "address_2": "STE 205",
            "city": "SMITHTOWN",
            "state": "NY",
            "postal_code": "11787",
            "telephone_number": "631-724-5500",
            "fax_number": "631-724-5500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "50 KARL AVE",
            "address_2": "STE 205",
            "city": "SMITHTOWN",
            "state": "NY",
            "postal_code": "11787",
            "telephone_number": "631-724-5500",
            "fax_number": "631-724-5500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARSHAK",
        "first_name": "FLO",
        "name_prefix": "Ms.",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-02-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NY",
            "license": "R0520641",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01650128",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "FLORA",
            "last_name": "MARSHAK",
            "prefix": "MS.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• James Christopher Marotta, MD
• Carlos C Marrero Prats, M.D.
• John Marrero, RN
• Stephannie Marrero
• Bianca Marro-Boyle
• Melissa Ashley Marte
• Emma Louise Martin, LMSW
• Gary Andre Martin, RN
• Jeffrey L Martin, MD
• Leslie Martin, LMT

• Clinical Social Worker in Smithtown, NY
• Providers in Smithtown, NY by specialty
• Clinical Social Worker in New York

• 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.