NOAH MERHAR O.D.
NPI 1467816645
Optometrist in Leeds, MA

NPI Status: Active since April 13, 2016

Contact Information

421 N MAIN ST
LEEDS, MA
ZIP 01053
Phone: (413) 584-4040

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  • Individual
  • Male
  • Optometrist

About NOAH MERHAR

This page provides the complete NPI Profile along with additional information for Noah Merhar, a provider established in Leeds, Massachusetts with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1467816645 assigned on April 2016. The practitioner's primary taxonomy code is 152W00000X with license number 2992 (CT). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1467816645
Provider Name
NOAH MERHAR O.D.
Gender
Male
Entity Type
Individual
Location Address
421 N MAIN ST LEEDS, MA 01053
Location Phone
(413) 584-4040
Mailing Address
65 SHERMAN AVE NORTHAMPTON, MA 01060
Mailing Phone
(617) 721-0740
Is Sole Proprietor?
No
Enumeration Date
04-13-2016
Last Update Date
09-30-2025
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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.
2992
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 1467816645, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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
1
Doubled → 2
Pos 2
4
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
7
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
5
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 6 → 12 → 3 8 → 16 → 7 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 2 + 7 + 1 + 6 + 1 + 1 + 2 + 6 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1467816645.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Endocrinology, Diabetes & Metabolism)
421 N MAIN ST
LEEDS, MA 01053
Radiology (Diagnostic Radiology)
421 N MAIN ST, VA MEDICAL CENTER
LEEDS, MA 01053
Family Medicine (Geriatric Medicine)
421 N MAIN ST
LEEDS, MA 01053
Internal Medicine
421 N MAIN ST
LEEDS, MA 01053
Internal Medicine
421 N MAIN ST
LEEDS, MA 01053
Physician Assistant (Medical)
421 N MAIN ST
LEEDS, MA 01053
Audiologist
421 N MAIN ST
LEEDS, MA 01053
Dentist (Oral and Maxillofacial Surgery)
421 N MAIN ST
LEEDS, MA 01053
Optometrist
421 N MAIN ST
LEEDS, MA 01053
Optometrist
421 N MAIN ST
LEEDS, MA 01053
Dentist (General Practice)
421 N MAIN ST
LEEDS, MA 01053
Internal Medicine
421 N MAIN ST
LEEDS, MA 01053
Internal Medicine
421 N MAIN ST
LEEDS, MA 01053
Internal Medicine
421 N MAIN ST
LEEDS, MA 01053
Pathology (Anatomic Pathology & Clinical Pathology)
421 N MAIN ST
LEEDS, MA 01053
Nurse Practitioner (Primary Care)
421 N MAIN ST
LEEDS, MA 01053
Physician Assistant
421 N MAIN ST
LEEDS, MA 01053
Respiratory Therapist, Registered
421 N MAIN ST
LEEDS, MA 01053
Respiratory Therapist, Registered (Critical Care)
421 N MAIN ST
LEEDS, MA 01053
Podiatrist
421 N MAIN ST
LEEDS, MA 01053

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1467816645, enumerated as an "individual" on April 13, 2016.

The provider is located at 421 N MAIN ST LEEDS, MA 01053 and the phone number is (413) 584-4040.

Optometrist with taxonomy code 152W00000X.