WILLIAM E LANDEFIELD
NPI 1346508405
Orthotic Fitter in Houston, TX

NPI Status: Active since April 26, 2012

Contact Information

11155 MAIN ST
HOUSTON, TX
ZIP 77025
Phone: (713) 474-4171
Fax: (713) 747-4249

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

Individual
Male
Orthotic Fitter

About WILLIAM LANDEFIELD

This page provides the complete NPI Profile along with additional information for William Landefield, a provider established in Houston, Texas with a medical specialization in Orthotic Fitter. The healthcare provider is registered in the NPI registry with number 1346508405 assigned on April 2012. The practitioner's primary taxonomy code is 225000000X. The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI: 1346508405
Provider Name: WILLIAM E LANDEFIELD
Gender: Male
Entity Type: Individual
Location Address: 11155 MAIN ST HOUSTON, TX 77025
Location Phone: (713) 474-4171
Location Fax: (713) 747-4249
Mailing Address: 11155 MAIN ST HOUSTON, TX 77025
Mailing Phone: (713) 474-4171
Mailing Fax: (713) 747-4249
Is Sole Proprietor?: No
Enumeration Date: 04-26-2012
Last Update Date: 04-26-2012
Code Navigator

Location Map

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: Orthotic Fitter
Taxonomy Code: 225000000X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Description: An individual trained in the management of fitting prefabricated orthoses.

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 1346508405, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

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 4 → 8 5 → 10 → 1 8 → 16 → 7 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 8 + 6 + 1 + 0 + 0 + 1 + 6 + 4 + 0 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1346508405.