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Dr. Sean O'Brien, D.M.D

General Practice Dentistry in Duxbury, MA · enumerated 2015.

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

National Provider Identifier

1316324759

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Registry record

Entity type Individual (Type 1)
Name Dr. Sean O'Brien
Credential D.M.D
Sex Male
Practice address 104 Tremont St Ste 4, Duxbury, MA, 02332
Phone (781) 934-5292
Enumeration date May 6, 2015
Last updated in NPPES Oct 14, 2024

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DN1857220 (MA) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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

Where does Sean O'Brien practice?
The practice location on file with NPPES is in Duxbury, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sean O'Brien?
The National Provider Identifier (NPI) for Sean O'Brien is 1316324759, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-14.