GREGG ELLYN WALKER
NPI 1215740543
Home Health Aide in South Charleston, WV

NPI Status: Active since January 30, 2025

Contact Information

325 6TH AVE
SOUTH CHARLESTON, WV
ZIP 25303
Phone: (304) 720-3383

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

Individual
Female
Home Health Aide

About GREGG WALKER

This page provides the complete NPI Profile along with additional information for Gregg Walker, a provider established in South Charleston, West Virginia with a medical specialization in Home Health Aide. The healthcare provider is registered in the NPI registry with number 1215740543 assigned on January 2025. The practitioner's primary taxonomy code is 374U00000X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1215740543
Provider Name: GREGG ELLYN WALKER
Gender: Female
Entity Type: Individual
Location Address: 325 6TH AVE SOUTH CHARLESTON, WV 25303
Location Phone: (304) 720-3383
Mailing Address: 325 6TH AVE SOUTH CHARLESTON, WV 25303
Is Sole Proprietor?: No
Enumeration Date: 01-30-2025
Last Update Date: 01-30-2025
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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: Home Health Aide
Taxonomy Code: 374U00000X
Type: Nursing Service Related Providers
Taxonomy Description: A person trained to assist public health nurses, home health nurses, and other health professionals in the bedside care of patients in their homes.

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 1215740543, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 0

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 1 → 2 7 → 14 → 5 0 → 0 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 2 + 5 + 1 + 4 + 4 + 0 + 5 + 8 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1215740543.