William Unger, D.D.S.

Primary specialty

General Practice DentistryTaxonomy code 1223G0001X

License

14231 Issued in MA

Practice address

81 West St
Leominster, MA 01453-5649

Phone

(978) 534-9216

Fax

(978) 537-6931

NPI assigned

Apr 8, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Male

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

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Howard Markowitz DDS PC

  • General Practice Dentistry
  • Leominster, MA
  • NPI 1487615845
  NPD (past)

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

{
    "created_epoch": "1144454400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1821051103",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "81 WEST ST",
            "city": "LEOMINSTER",
            "state": "MA",
            "postal_code": "014535649",
            "telephone_number": "978-534-9216",
            "fax_number": "978-537-6931"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "81 WEST ST",
            "city": "LEOMINSTER",
            "state": "MA",
            "postal_code": "014535649",
            "telephone_number": "978-534-9216",
            "fax_number": "978-537-6931"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UNGER",
        "first_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "D.D.S.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "MA",
            "license": "14231",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE NUMBER",
            "identifier": "14231",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Umass Memorial Health Care, Inc.
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• Christopher M Urato, PT, DPT
• Wendy Uribe
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• Lourdes Uy, M.D.

• General Practice Dentistry in Leominster, MA
• Providers in Leominster, MA by specialty
• General Practice Dentistry in Massachusetts

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.