Individual provider Active NPI

Nathan R Allen, LMSW

  • Social Worker
  • Willimantic, CT
National Provider Identifier
1003771940
Registry record updated Dec 23, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Social WorkerTaxonomy code 104100000X
License
11797 Issued in CT
Practice address
1310 Main St
Willimantic, CT 06226-1910
Phone
(860) 731-5522
Fax
(860) 731-5536
NPI assigned
Dec 23, 2025
Last updated
Dec 23, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 23, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Social Worker 104100000X 11797 CT Primary

Addresses

Primary practice location

1310 Main St
Willimantic, CT 06226-1910

Mailing address

2 Waterside Xing Ste 40
Windsor, CT 06095-1587
Phone (860) 731-5522

Other practice location 1

444 Center St
Manchester, CT 06040-3926
Phone (860) 731-5522

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
11797CTMDPsychoanalyst

NPI Registry JSON

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

{
    "created_epoch": "1766448000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766448000000",
    "number": "1003771940",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2 WATERSIDE XING STE 40",
            "city": "WINDSOR",
            "state": "CT",
            "postal_code": "060951587",
            "telephone_number": "860-731-5522",
            "fax_number": "860-731-5536"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1310 MAIN ST",
            "city": "WILLIMANTIC",
            "state": "CT",
            "postal_code": "062261910",
            "telephone_number": "860-731-5522",
            "fax_number": "860-731-5536"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "444 Center St",
            "address_purpose": "LOCATION",
            "city": "Manchester",
            "state": "CT",
            "postal_code": "060403926",
            "country_code": "US",
            "telephone_number": "860-731-5522",
            "fax_number": "860-731-5536",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALLEN",
        "first_name": "NATHAN",
        "middle_name": "R",
        "credential": "LMSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-12-23",
        "last_updated": "2025-12-23",
        "certification_date": "2025-12-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CT",
            "license": "11797",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Willimantic, CT

Sources for this page

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