DR. ROBERT DEMAYO DO
NPI 1376066019
Optometrist in Hamden, CT

NPI Status: Active since July 25, 2017

Contact Information

2100 DIXWELL AVE
HAMDEN, CT
ZIP 06514
Phone: (203) 281-4330
Fax: (203) 288-4018

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  • Individual
  • Male
  • Optometrist

About ROBERT DEMAYO

This page provides the complete NPI Profile along with additional information for Robert Demayo, a provider established in Hamden, Connecticut with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1376066019 assigned on July 2017. The practitioner's primary taxonomy code is 152W00000X with license number 705 (CT). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1376066019
Provider Name
DR. ROBERT DEMAYO DO
Gender
Male
Entity Type
Individual
Location Address
2100 DIXWELL AVE HAMDEN, CT 06514
Location Phone
(203) 281-4330
Location Fax
(203) 288-4018
Mailing Address
2100 DIXWELL AVE HAMDEN, CT 06514
Mailing Phone
(203) 281-4330
Mailing Fax
(203) 288-4018
Is Sole Proprietor?
Yes
Enumeration Date
07-25-2017
Last Update Date
07-21-2022
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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.
705
License State
CT
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 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 1376066019, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
3
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
6
Unchanged
Pos 5
0
Doubled → 0
Pos 6
6
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
0
Unchanged
Pos 9
1
Doubled → 2
Check
9
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 0 → 0 6 → 12 → 3 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 4 + 6 + 0 + 6 + 1 + 2 + 0 + 2 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1376066019.

Other Providers at the Same Location


The following 8 providers are registered at the same or a nearby location.

Pharmacy (Community/Retail Pharmacy)
2100 DIXWELL AVE
HAMDEN, CT 06514
Eyewear Supplier
2100 DIXWELL AVE, SUITE 16
HAMDEN, CT 06514
Pharmacist
2100 DIXWELL AVE
HAMDEN, CT 06514
Dentist (General Practice)
2100 DIXWELL AVE, SUITE 64
HAMDEN, CT 06514
Pharmacist
2100 DIXWELL AVE
HAMDEN, CT 06514
Technician/Technologist (Optician)
2100 DIXWELL AVE
HAMDEN, CT 06514
Dentist
2100 DIXWELL AVE
HAMDEN, CT 06514
Pharmacy (Community/Retail Pharmacy)
2100 DIXWELL AVE
HAMDEN, CT 06514

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1376066019, enumerated as an "individual" on July 25, 2017.

The provider is located at 2100 DIXWELL AVE HAMDEN, CT 06514 and the phone number is (203) 281-4330.

Optometrist with taxonomy code 152W00000X.