THE PUBLIC RECORD · NPPES / CMS

Gianmarco O'Brien, DDS

Prosthodontics · Orange, CA

Compiled from the NPPES public registry (CMS). Data as of 2026-06-08.

This provider is not affiliated with Gale. This listing is compiled from the NPPES public registry (CMS).

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The record
NPI1336338847
In the register since2007
CredentialDDS
Listed specialtyProsthodontics
Practice typeSole proprietor
CityOrange
StateCA

The federal register has carried this listing since 2007. It records a name, a credential, a city, a telephone number. It does not record services, hours, or what a first visit costs — the registry was never built to.

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Gianmarco O'Brien, DDS — Prosthodontics in Orange, CA · NPI 1336338847 · Gale