TAMMY NEYSTEL
NPI 1902459548
Hearing Instrument Specialist in Plano, TX

NPI Status: Active since July 23, 2019

Contact Information

6860 DALLAS PKWY STE 200
PLANO, TX
ZIP 75024
Phone: (832) 886-7505
Fax: (972) 265-7995

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Hearing Instrument Specialist

About TAMMY NEYSTEL

This page provides the complete NPI Profile along with additional information for Tammy Neystel, a provider established in Plano, Texas with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1902459548 assigned on July 2019. The practitioner's primary taxonomy code is 237700000X. The provider is registered as an individual and her NPI record was last updated 3 years ago.

NPI: 1902459548
Provider Name: TAMMY NEYSTEL
Gender: Female
Entity Type: Individual
Location Address: 6860 DALLAS PKWY STE 200 PLANO, TX 75024
Location Phone: (832) 886-7505
Location Fax: (972) 265-7995
Mailing Address: 2813 SADLER AVE FORT WORTH, TX 76133
Mailing Phone: (832) 886-7505
Mailing Fax: (972) 265-7995
Is Sole Proprietor?: No
Enumeration Date: 07-23-2019
Last Update Date: 01-04-2023
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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
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

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 1902459548, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 0

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 0 → 0 4 → 8 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 0 + 2 + 8 + 5 + 1 + 8 + 5 + 8 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1902459548.