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DR. GIANMARCO O'BRIEN D.D.S.
NPI 1336338847
Dentist - Prosthodontics in Orange, CA

Active since October 20, 2007
1140 W LA VETA AVE, SUITE #530, ORANGE, CA 92868(714) 953-1000(714) 953-9957 Get Directions Write a Review

NPPES record last updated: November 8, 2010. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Gianmarco O'brien D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GIANMARCO O'BRIEN D.D.S. (NPI 1336338847) is an individual prosthodontics provider in Orange, California, licensed in California (51630) and active in the NPI registry since October 2007.

NPPES Registry Identity

NPI1336338847
Entity TypeIndividualMale
Primary Taxonomy1223P0700X
Provider Legal NameDR. GIANMARCO O'BRIENCredential: D.D.S.
Location Address1140 W LA VETA AVE, SUITE #530Orange, CA 92868-4223
Mailing Address617 RockefellerIrvine, CA 92612-7176 · (510) 908-4522
Phone(714) 953-1000
Fax(714) 953-9957
Sole ProprietorYes
Enumeration DateOctober 20, 2007
Last NPPES UpdateNovember 8, 2010
✔ NPI 1336338847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · ProsthodonticsDental Providers
Taxonomy Code1223P0700X
License✔ Licensed in CA · 51630
Definition
That branch of dentistry pertaining to the restoration and maintenance of oral functions, comfort, appearance and health of the patient by the restoration of natural teeth and/or the replacement of missing teeth and contiguous oral and maxillofacial tissues with artificial substitutes.
1140 W LA VETA AVE, Orange, CA 92868
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JANINE CHRISTIAN HENDRICKSON R.N.P.
Nurse Practitioner (Obstetrics & Gynecology)
1140 W LA VETA AVE, SUITE 770
ORANGE, CA 92868
Orange County (714) 835-8715
THERESA LEMBESIS PHARMD
Pharmacist
1140 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 744-8724
JENNIFER J. JUDELSON PA-C
Physician Assistant
1140 W LA VETA AVE, SUITE 860
ORANGE, CA 92868
Orange County (714) 835-6500
LAUREN TRAN PHARMD
Pharmacist
1140 W LA VETA AVE
ORANGE, CA 92868
Orange County (714) 744-8724
STERLING B MUTZ MD INC JULIO TALEISNIK MD INC ET AL
Occupational Therapist (Hand)
1140 W LA VETA AVE, SUITE 860
ORANGE, CA 92868
Orange County (714) 835-6500
JEFFREY M. SHAPIRO, MD, INC
Internal Medicine
1140 W LA VETA AVE, SUITE 615
ORANGE, CA 92868
Orange County (714) 543-8555
UC IRVINE CARDIOPULMONARY CLINIC
Clinic/Center (Medical Specialty)
1140 W LA VETA AVE, SUITE 750
ORANGE, CA 92868
Orange County (855) 563-5320
EDWARD SU-CHONG LEE M.D.
Otolaryngology
1140 W LA VETA AVE, STE. 520
ORANGE, CA 92868
Orange County (714) 543-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gianmarco O'brien's NPI number?

The NPI number for Gianmarco O'brien is 1336338847. It was assigned to this individual provider in the NPPES registry on October 20, 2007.

Where is Gianmarco O'brien located?

Gianmarco O'brien practices at 1140 W La Veta Ave Suite #530, Orange, CA 92868. The listed phone number is (714) 953-1000.

What is Gianmarco O'brien's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Prosthodontics, with taxonomy code 1223P0700X.

When was this NPI record last updated?

The NPPES record for Gianmarco O'brien was last updated on November 8, 2010. NPI Profile syncs with the weekly NPPES data releases published by CMS.