MR. MICHAEL KENWERD LOYD HADF
NPI 1689471625
Hearing Instrument Specialist in Tulsa, OK

NPI Status: Active since February 27, 2025

Contact Information

7757 S OLYMPIA AVE
TULSA, OK
ZIP 74132
Phone: (918) 877-4598

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  • Individual
  • Male
  • Hearing Instrument Specialist

About MICHAEL LOYD

This page provides the complete NPI Profile along with additional information for Michael Loyd, a provider established in Tulsa, Oklahoma with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1689471625 assigned on February 2025. The practitioner's primary taxonomy code is 237700000X with license number 1357 (OK). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1689471625
Provider Name
MR. MICHAEL KENWERD LOYD HADF
Gender
Male
Entity Type
Individual
Location Address
7757 S OLYMPIA AVE TULSA, OK 74132
Location Phone
(918) 877-4598
Mailing Address
7757 S OLYMPIA AVE TULSA, OK 74132
Mailing Phone
(918) 877-4598
Is Sole Proprietor?
Yes
Enumeration Date
02-27-2025
Last Update Date
02-27-2025
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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

Hearing Instrument Specialist

Taxonomy Code
237700000X
Type
Speech, Language and Hearing Service Providers
License No.
1357
License State
OK
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 1689471625, 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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
4
Doubled → 8
Pos 6
7
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
2
Doubled → 4
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 8 → 16 → 7 4 → 8 1 → 2 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 + 6 + 9 + 8 + 7 + 2 + 6 + 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 1689471625.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Eyewear Supplier
7757 S OLYMPIA AVE
TULSA, OK 74132
Pharmacist
7757 S OLYMPIA AVE
TULSA, OK 74132
Pharmacy (Community/Retail Pharmacy)
7757 S OLYMPIA AVE
TULSA, OK 74132

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689471625, enumerated as an "individual" on February 27, 2025.

The provider is located at 7757 S OLYMPIA AVE TULSA, OK 74132 and the phone number is (918) 877-4598.

Hearing Instrument Specialist with taxonomy code 237700000X.