MR. EDWARD THOMAS GIAMBALVO ABOC, FNAO
NPI 1417151887
Technician/Technologist - Optician in Yonkers, NY

NPI Status: Active since June 12, 2007

Contact Information

819 YONKERS AVE
YONKERS, NY
ZIP 10704
Phone: (914) 375-5775
Fax: (914) 476-5021

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Technician/Technologist
Optician

About EDWARD GIAMBALVO

This page provides the complete NPI Profile along with additional information for Edward Giambalvo, a provider established in Yonkers, New York with a medical specialization in Technician/technologist, focusing in optician . The healthcare provider is registered in the NPI registry with number 1417151887 assigned on June 2007. The practitioner's primary taxonomy code is 156FX1800X. The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI: 1417151887
Provider Name: MR. EDWARD THOMAS GIAMBALVO ABOC, FNAO
Gender: Male
Entity Type: Individual
Location Address: 819 YONKERS AVE YONKERS, NY 10704
Location Phone: (914) 375-5775
Location Fax: (914) 476-5021
Mailing Address: 819 YONKERS AVE YONKERS, NY 10704
Mailing Phone: (914) 375-5775
Mailing Fax: (914) 476-5021
Is Sole Proprietor?: No
Enumeration Date: 06-12-2007
Last Update Date: 09-01-2009
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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: Technician/Technologist Optician
Taxonomy Code: 156FX1800X
Type: Eye and Vision Services Providers
Taxonomy Description: Opticians help fit eyeglasses and contact lenses, following prescriptions from Ophthalmologists and Optometrists. They also help customers decide which eyeglass frame or contact lenses to buy.

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 1417151887, 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 2

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

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 1 → 2 1 → 2 1 → 2 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 2 + 7 + 2 + 5 + 2 + 8 + 1 + 6 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1417151887.