Individual provider Active NPI

William B Buller Jr., LCSW, LADC

  • Social Worker
  • Dayville, CT
National Provider Identifier
1982136537
Registry record updated Apr 22, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Social WorkerTaxonomy code 104100000X
License
16274 Issued in CT
Practice address
1007 N Main St
Dayville, CT 06241-2170
Phone
(607) 774-2020
Fax
(860) 774-0826
NPI assigned
Apr 3, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 22, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Counselor 101YA0400X 1463 CT
Social Worker 104100000X 16274 CT Primary

Addresses

Primary practice location

1007 N Main St
Dayville, CT 06241-2170

Mailing address

677 S Main St Ste 5a
Cheshire, CT 06410-3161
Phone (860) 506-6016

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250909002857 CT Practitioner - Mental Health Counselor 1658873435 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Mental Health Counselor
Education
Other, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
United Services Inc 31 clinicians

Practice addresses (Care Compare)

1007 N Main St
Dayville, CT 06241-2170
Phone 86077420208693

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
16274CTMDSocial Worker

Practice roles

OrganizationSpecialtyStatusNew patients
United Services Inc CurrentSince Aug 25, 2025 Accepting new patients

Locations

140 N Frontage Rd
Mansfield Ctr, CT 06250
Phone (860) 456-2261

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1491177600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776816000000",
    "number": "1982136537",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "677 S MAIN ST STE 5A",
            "city": "CHESHIRE",
            "state": "CT",
            "postal_code": "064103161",
            "telephone_number": "860-506-6016"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1007 N MAIN ST",
            "city": "DAYVILLE",
            "state": "CT",
            "postal_code": "062412170",
            "telephone_number": "607-774-2020",
            "fax_number": "860-774-0826"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BULLER",
        "first_name": "WILLIAM",
        "middle_name": "B",
        "name_prefix": "Mr.",
        "name_suffix": "Jr.",
        "credential": "LCSW, LADC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-04-03",
        "last_updated": "2026-04-22",
        "certification_date": "2026-04-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "CT",
            "license": "1463",
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CT",
            "license": "16274",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dayville, CT

Sources for this page

Verify at the official NPI Registry.