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

NPI Status: Active since October 20, 2007

Contact Information

1140 W LA VETA AVE
SUITE #530
ORANGE, CA
ZIP 92868
Phone: (714) 953-1000
Fax: (714) 953-9957

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  • Individual
  • Male
  • Dentist
  • Prosthodontics

About GIANMARCO O'BRIEN

This page provides the complete NPI Profile along with additional information for Gianmarco O'brien, a provider established in Orange, California with a medical specialization in Dentist, focusing in prosthodontics . The healthcare provider is registered in the NPI registry with number 1336338847 assigned on October 2007. The practitioner's primary taxonomy code is 1223P0700X with license number 51630 (CA). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1336338847
Provider Name
DR. GIANMARCO O'BRIEN D.D.S.
Gender
Male
Entity Type
Individual
Location Address
1140 W LA VETA AVE SUITE #530 ORANGE, CA 92868
Location Phone
(714) 953-1000
Location Fax
(714) 953-9957
Mailing Address
617 ROCKEFELLER IRVINE, CA 92612
Mailing Phone
(510) 908-4522
Is Sole Proprietor?
Yes
Enumeration Date
10-20-2007
Last Update Date
11-08-2010
Code Navigator

A dentist like Gianmarco O'brien is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Dentist Prosthodontics

Taxonomy Code
1223P0700X
Type
Dental Providers
License No.
51630
License State
CA
Taxonomy Description
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.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1336338847, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
3
Doubled → 6
Pos 4
6
Unchanged
Pos 5
3
Doubled → 6
Pos 6
3
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 3 → 6 3 → 6 8 → 16 → 7 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 3 + 6 + 6 + 6 + 3 + 1 + 6 + 8 + 8 + 24 = 73

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1336338847.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Dentist (Prosthodontics)
1140 W LA VETA AVE, STE 530
ORANGE, CA 92868
Otolaryngology
1140 W LA VETA AVE, STE. 520
ORANGE, CA 92868
Otolaryngology
1140 W LA VETA AVE, STE. 520
ORANGE, CA 92868
Otolaryngology
1140 W LA VETA AVE, STE. 520
ORANGE, CA 92868
Radiology (Diagnostic Radiology)
1140 W LA VETA AVE, STE. 850
ORANGE, CA 92868
Surgery (Vascular Surgery)
1140 W LA VETA AVE, STE. 850
ORANGE, CA 92868
Internal Medicine (Gastroenterology)
1140 W LA VETA AVE, SUITE 615
ORANGE, CA 92868
Otolaryngology (Otolaryngology/Facial Plastic Surgery)
1140 W LA VETA AVE, #810
ORANGE, CA 92868
Urology
1140 W LA VETA AVE, SUITE 605
ORANGE, CA 92868
Occupational Therapist (Hand)
1140 W LA VETA AVE, SUITE 860
ORANGE, CA 92868
Internal Medicine
1140 W LA VETA AVE
ORANGE, CA 92868
Psychiatry & Neurology (Neurology)
1140 W LA VETA AVE, SUITE 730
ORANGE, CA 92868
Internal Medicine
1140 W LA VETA AVE, SUITE 540
ORANGE, CA 92868
Urology
1140 W LA VETA AVE, SUITE 840
ORANGE, CA 92868
Internal Medicine
1140 W LA VETA AVE, SUITE #470
ORANGE, CA 92868
Clinic/Center (Endoscopy)
1140 W LA VETA AVE, STE 550
ORANGE, CA 92868
Internal Medicine (Gastroenterology)
1140 W LA VETA AVE, STE 555
ORANGE, CA 92868
Colon & Rectal Surgery
1140 W LA VETA AVE, SUITE 830
ORANGE, CA 92868
Specialist
1140 W LA VETA AVE, #760
ORANGE, CA 92868
Physician Assistant
1140 W LA VETA AVE, SUITE 860
ORANGE, CA 92868

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1336338847, enumerated as an "individual" on October 20, 2007.

The provider is located at 1140 W LA VETA AVE SUITE #530 ORANGE, CA 92868 and the phone number is (714) 953-1000.

Dentist with taxonomy code 1223P0700X and a focus in Prosthodontics.