William C Hallett, PHARM.D.

Primary specialty

Psychiatric PharmacistTaxonomy code 1835P1300X

License

035415-1 Issued in NY

Practice address

403 Littleworth LN
Sea Cliff, NY 11579-1919

Phone

(516) 672-0195

NPI assigned

Jan 18, 2007

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Pharmacy

State licenses

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

{
    "created_epoch": "1169078400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1043363690",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "403 LITTLEWORTH LN",
            "city": "SEA CLIFF",
            "state": "NY",
            "postal_code": "115791919",
            "telephone_number": "516-672-0195"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "403 LITTLEWORTH LN",
            "city": "SEA CLIFF",
            "state": "NY",
            "postal_code": "115791919",
            "telephone_number": "516-672-0195"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HALLETT",
        "first_name": "WILLIAM",
        "middle_name": "C",
        "name_prefix": "Dr.",
        "credential": "PHARM.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-01-18",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1835G0303X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Geriatric",
            "state": "NY",
            "license": "035415-1",
            "primary": false
        },
        {
            "code": "1835P1200X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Pharmacotherapy",
            "state": "NY",
            "license": "035415-1",
            "primary": false
        },
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "NY",
            "license": "035415-1",
            "primary": false
        },
        {
            "code": "1835P1300X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Psychiatric",
            "state": "NY",
            "license": "035415-1",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Susan Goldberg, R.N.
• Natacha Ivelis Gonzalez, MSW
• Jacob Reuben Greebel, MSW, MSED
• Amanda Treco Hackett, MA CCC-SLP TSSLD
• Kathleen Haley, PT, DPT
• Cory Hattem
• Alexandra Hilas, SLP
• Inc Village of Sea Cliff
• Anne Kearney, CCC SLP
• Nicole M Korte, LMSW

• Psychiatric Pharmacist in Sea Cliff, NY
• Providers in Sea Cliff, NY by specialty
• Psychiatric Pharmacist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.