GARY DOWNEY
NPI 1679184527
Hearing Instrument Specialist in Lexington, MA

NPI Status: Active since August 13, 2020

Contact Information

21 WORTHEN RD
LEXINGTON, MA
ZIP 02421
Phone: (781) 861-6340

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  • Individual
  • Male
  • Hearing Instrument Specialist

About GARY DOWNEY

This page provides the complete NPI Profile along with additional information for Gary Downey, a provider established in Lexington, Massachusetts with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1679184527 assigned on August 2020. The practitioner's primary taxonomy code is 237700000X with license number 493 (MA). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI
1679184527
Provider Name
GARY DOWNEY
Gender
Male
Entity Type
Individual
Location Address
21 WORTHEN RD LEXINGTON, MA 02421
Location Phone
(781) 861-6340
Mailing Address
757 HIGHLAND AVE # 324 NEEDHAM HEIGHTS, MA 02494
Mailing Phone
(443) 875-1589
Is Sole Proprietor?
No
Enumeration Date
08-13-2020
Last Update Date
08-13-2020
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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

Hearing Instrument Specialist

Taxonomy Code
237700000X
Type
Speech, Language and Hearing Service Providers
License No.
493
License State
MA
Taxonomy Description
Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society

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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 1679184527, 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
1
Doubled → 2
Pos 6
8
Unchanged
Pos 7
4
Doubled → 8
Pos 8
5
Unchanged
Pos 9
2
Doubled → 4
Check
7
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 1 → 2 4 → 8 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 2 + 8 + 8 + 5 + 4 + 24 = 73

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

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1679184527.

Other Providers at the Same Location


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

Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Social Worker
21 WORTHEN RD, SUITE 2
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Optometrist
21 WORTHEN RD
LEXINGTON, MA 02421
Counselor (Mental Health)
21 WORTHEN RD, SUITE 2
LEXINGTON, MA 02421
Hearing Instrument Specialist
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Ophthalmology
21 WORTHEN RD
LEXINGTON, MA 02421
Optometrist
21 WORTHEN RD
LEXINGTON, MA 02421
Technician/Technologist (Optician)
21 WORTHEN RD
LEXINGTON, MA 02421

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679184527, enumerated as an "individual" on August 13, 2020.

The provider is located at 21 WORTHEN RD LEXINGTON, MA 02421 and the phone number is (781) 861-6340.

Hearing Instrument Specialist with taxonomy code 237700000X.