MR. RONALD SAMPSON JR. LDO
NPI 1649958075
Technician/Technologist - Optician in Medford, NY

NPI Status: Active since July 06, 2023

Contact Information

2950 HORSEBLOCK RD
MEDFORD, NY
ZIP 11763
Phone: (631) 776-9043
Fax: (631) 286-9485

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

Individual
Male
Technician/Technologist
Optician

About RONALD SAMPSON

This page provides the complete NPI Profile along with additional information for Ronald Sampson, a provider established in Medford, New York with a medical specialization in Technician/technologist, focusing in optician . The healthcare provider is registered in the NPI registry with number 1649958075 assigned on July 2023. The practitioner's primary taxonomy code is 156FX1800X with license number 009709 (NY). The provider is registered as an individual and his NPI record was last updated 3 years ago.

NPI: 1649958075
Provider Name: MR. RONALD SAMPSON JR. LDO
Gender: Male
Entity Type: Individual
Location Address: 2950 HORSEBLOCK RD MEDFORD, NY 11763
Location Phone: (631) 776-9043
Location Fax: (631) 286-9485
Mailing Address: 2950 HORSEBLOCK RD MEDFORD, NY 11763
Mailing Phone: (631) 776-9043
Mailing Fax: (631) 286-9485
Is Sole Proprietor?: No
Enumeration Date: 07-06-2023
Last Update Date: 07-06-2023
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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
License No.: 009709
License State: NY
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 1649958075, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

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 4 → 8 9 → 18 → 9 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 8 + 9 + 1 + 8 + 5 + 1 + 6 + 0 + 1 + 4 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1649958075.