MARK MADDALENA LDO
NPI 1518823863
Technician/Technologist - Optician in Monroe, NY
NPI Status: Active since December 30, 2025
Contact Information
288 LARKIN DR
MONROE, NY
ZIP 10950
Phone: (845) 783-1112
- Individual
- Male
- Technician/Technologist
- Optician
About MARK MADDALENA
This page provides the complete NPI Profile along with additional information for Mark Maddalena, a provider established in Monroe, New York with a medical specialization in Technician/technologist, focusing in optician . The healthcare provider is registered in the NPI registry with number 1518823863 assigned on December 2025. The practitioner's primary taxonomy code is 156FX1800X with license number 010766 (NY). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1518823863
- Provider Name
- MARK MADDALENA LDO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 288 LARKIN DR MONROE, NY 10950
- Location Phone
- (845) 783-1112
- Mailing Address
- 3 RIDINGS LN CHESTER, NY 10918
- Mailing Phone
- (845) 596-4244
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-30-2025
- Last Update Date
- 12-30-2025
- Code Navigator
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
Technician/Technologist Optician
- Taxonomy Code
- 156FX1800X
- Type
- Eye and Vision Services Providers
- License No.
- 010766
- 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.
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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 1518823863, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 67 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 13 providers are registered at the same or a nearby location.
MONROE, NY 10950
MONROE, NY 10950
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1518823863, enumerated as an "individual" on December 30, 2025.
The provider is located at 288 LARKIN DR MONROE, NY 10950 and the phone number is (845) 783-1112.
Technician/Technologist with taxonomy code 156FX1800X and a focus in Optician.
