ERIN FOSNAUGH HIS
NPI 1104637602
Hearing Instrument Specialist in Fort Wayne, IN

NPI Status: Active since January 15, 2025

Contact Information

10021 DUPONT CIRCLE CT
FORT WAYNE, IN
ZIP 46825
Phone: (260) 459-6924

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

Individual
Female
Hearing Instrument Specialist

About ERIN FOSNAUGH

This page provides the complete NPI Profile along with additional information for Erin Fosnaugh, a provider established in Fort Wayne, Indiana with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1104637602 assigned on January 2025. The practitioner's primary taxonomy code is 237700000X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1104637602
Provider Name: ERIN FOSNAUGH HIS
Gender: Female
Entity Type: Individual
Location Address: 10021 DUPONT CIRCLE CT FORT WAYNE, IN 46825
Location Phone: (260) 459-6924
Mailing Address: 10021 DUPONT CIRCLE CT FORT WAYNE, IN 46825
Is Sole Proprietor?: No
Enumeration Date: 01-15-2025
Last Update Date: 01-15-2025
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Location Map

Secondary Locations

424 Williams St
Angola, IN 46703
(260) 459-6924

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 1104637602, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).

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 → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 0

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 6 → 12 → 3 7 → 14 → 5 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 1 + 2 + 3 + 1 + 4 + 6 + 0 + 24 = 48

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

The next multiple of ten after 48 is 50. The difference is the calculated check digit.

50 - 48 = 2

This NPI is valid

The calculated check digit is 2, which matches the last digit of 1104637602.