Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Union Street Dental Pllc

Prosthodontics in Portsmouth, NH · enumerated 2017 · authorized official Samantha King, Dentist.

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

National Provider Identifier

1659806263

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Registry record

Entity type Organization (Type 2)

Legal business name Union Street Dental Pllc

Practice address 320 Union St, Portsmouth, NH, 03801

Phone (603) 436-2144

Enumeration date Apr 21, 2017

Last updated in NPPES Apr 21, 2017

Taxonomy & classification

1223P0700X Prosthodontics Dental Providers · License 03948 (NH) Primary

Authorized official

Name Samantha King

Title Dentist

Phone (603) 436-2144

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2017-04-21. Verify at npiregistry.cms.hhs.gov.

Where is Union Street Dental Pllc located?

The practice location on file with NPPES is in Portsmouth, NH.

Providers at this address

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Donald Welsh General Practice Dentistry · Portsmouth, NH NPI 1407884679 Donald R. Welsh, Jr. D.M.D.,P.L.L.C Dentist · Portsmouth, NH NPI 1417135112

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-21.