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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Union Dental Marlborough LLC

Dentist in Marlborough, MA · enumerated 2016 · authorized official Tony Tong, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1376901991

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Registry record

Entity type Organization (Type 2)
Legal business name Union Dental Marlborough LLC
Parent organization Tony Tong PC
Practice address 126 Union Street, First Floor, Marlborough, MA, 01752
Fax (508) 481-4242
Enumeration date Feb 10, 2016
Last updated in NPPES Feb 10, 2016

Taxonomy & classification

122300000X Dentist Dental Providers · License DN1856286 (MA) Primary

Authorized official

Name Tony Tong
Title President

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What type of organization is Union Dental Marlborough LLC?
Union Dental Marlborough LLC is registered in NPPES as a Dentist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-10.