DR. TONY NGOC NGUYEN O.D.
NPI 1629229497
Optometrist in Cerritos, CA

NPI Status: Active since October 09, 2008

Contact Information

18000 STUDEBAKER RD STE 505
CERRITOS, CA
ZIP 90703
Phone: (562) 402-5823
Fax: (562) 402-5884

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  • Individual
  • Male
  • Optometrist

About TONY NGUYEN

This page provides the complete NPI Profile along with additional information for Tony Nguyen, a provider established in Cerritos, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1629229497 assigned on October 2008. The practitioner's primary taxonomy code is 152W00000X with license number 12918T (CA). The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI
1629229497
Provider Name
DR. TONY NGOC NGUYEN O.D.
Gender
Male
Entity Type
Individual
Location Address
18000 STUDEBAKER RD STE 505 CERRITOS, CA 90703
Location Phone
(562) 402-5823
Location Fax
(562) 402-5884
Mailing Address
18220 SANTA SOPHIA CIR FOUNTAIN VALLEY, CA 92708
Mailing Phone
(714) 260-1314
Is Sole Proprietor?
Yes
Enumeration Date
10-09-2008
Last Update Date
05-08-2024
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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

Optometrist

Taxonomy Code
152W00000X
Type
Eye and Vision Services Providers
License No.
12918T
License State
CA
Taxonomy Description
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

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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 1629229497, 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
6
Unchanged
Pos 3
2
Doubled → 4
Pos 4
9
Unchanged
Pos 5
2
Doubled → 4
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
9
Doubled → 18 → 1 + 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 2 → 4 2 → 4 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 4 + 9 + 4 + 2 + 1 + 8 + 4 + 1 + 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 1629229497.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Optometrist
18000 STUDEBAKER RD STE 505
CERRITOS, CA 90703

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1629229497, enumerated as an "individual" on October 09, 2008.

The provider is located at 18000 STUDEBAKER RD STE 505 CERRITOS, CA 90703 and the phone number is (562) 402-5823.

Optometrist with taxonomy code 152W00000X.