DR. GARY R O'BRIEN D.D.S.
NPI 1477729747
Dentist in Glendale, CA

NPI Status: Active since May 06, 2008

Contact Information

411 N CENTRAL AVE
SUITE 225
GLENDALE, CA
ZIP 91203
Phone: (818) 956-0639
Fax: (818) 246-1542

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  • Individual
  • Male
  • Dentist

About GARY O'BRIEN

This page provides the complete NPI Profile along with additional information for Gary O'brien, a provider established in Glendale, California with a medical specialization in Dentist. The healthcare provider is registered in the NPI registry with number 1477729747 assigned on May 2008. The practitioner's primary taxonomy code is 122300000X with license number 29639 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1477729747
Provider Name
DR. GARY R O'BRIEN D.D.S.
Gender
Male
Entity Type
Individual
Location Address
411 N CENTRAL AVE SUITE 225 GLENDALE, CA 91203
Location Phone
(818) 956-0639
Location Fax
(818) 246-1542
Mailing Address
411 N CENTRAL AVE SUITE 225 GLENDALE, CA 91203
Mailing Phone
(818) 956-0639
Mailing Fax
(818) 246-1542
Is Sole Proprietor?
Yes
Enumeration Date
05-06-2008
Last Update Date
05-06-2008
Code Navigator

A dentist like Gary 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.

Location Map

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

Taxonomy Code
122300000X
Type
Dental Providers
License No.
29639
License State
CA
Taxonomy Description
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

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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 1477729747, 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
4
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
7
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
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 7 → 14 → 5 7 → 14 → 5 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 4 + 7 + 1 + 4 + 2 + 1 + 8 + 7 + 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 1477729747.

Other Providers at the Same Location


The following 14 providers are registered at the same or a nearby location.

Dentist (Periodontics)
411 N CENTRAL AVE, SUITE 220
GLENDALE, CA 91203
Acupuncturist
411 N CENTRAL AVE, SUITE 120
GLENDALE, CA 91203
Physical Therapist
411 N CENTRAL AVE, SUITE 300
GLENDALE, CA 91203
Occupational Therapist
411 N CENTRAL AVE, SUITE 300
GLENDALE, CA 91203
Dentist
411 N CENTRAL AVE, SUITE 360
GLENDALE, CA 91203
Dentist
411 N CENTRAL AVE, SUITE 120
GLENDALE, CA 91203
Dentist (Periodontics)
411 N CENTRAL AVE, SUITE 220
GLENDALE, CA 91203
Acupuncturist
411 N CENTRAL AVE, #610
GLENDALE, CA 91203
Pediatrics
411 N CENTRAL AVE, #130
GLENDALE, CA 91203
Pediatrics
411 N CENTRAL AVE, SUITE 130
GLENDALE, CA 91203
Clinic/Center (Medical Specialty)
411 N CENTRAL AVE, 610
GLENDALE, CA 91203
Dentist
411 N CENTRAL AVE
GLENDALE, CA 91203
Eyewear Supplier
411 N CENTRAL AVE, SUITE 50 UNITED OPTICAL
GLENDALE, CA 91203
Pharmacy (Community/Retail Pharmacy)
411 N CENTRAL AVE, SUITE 100
GLENDALE, CA 91203

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1477729747, enumerated as an "individual" on May 06, 2008.

The provider is located at 411 N CENTRAL AVE SUITE 225 GLENDALE, CA 91203 and the phone number is (818) 956-0639.

Dentist with taxonomy code 122300000X.