MR. JOHN WILLIAMSON BEHAVIOR TECHNICIAN
NPI 1689181588
Technician/Technologist in Troy, MI

NPI Status: Active since January 02, 2018

Contact Information

1225 E BIG BEAVER RD
TROY, MI
ZIP 48083
Phone: (248) 524-8850
Fax: (248) 524-8850

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

Individual
Male
Technician/Technologist

About JOHN WILLIAMSON

This page provides the complete NPI Profile along with additional information for John Williamson, a provider established in Troy, Michigan with a medical specialization in Technician/technologist. The healthcare provider is registered in the NPI registry with number 1689181588 assigned on January 2018. The practitioner's primary taxonomy code is 156F00000X. The provider is registered as an individual and his NPI record was last updated 7 years ago.

NPI: 1689181588
Provider Name: MR. JOHN WILLIAMSON BEHAVIOR TECHNICIAN
Gender: Male
Entity Type: Individual
Location Address: 1225 E BIG BEAVER RD TROY, MI 48083
Location Phone: (248) 524-8850
Location Fax: (248) 524-8850
Mailing Address: 1225 E BIG BEAVER RD STE 205 TROY, MI 48083
Mailing Phone: (248) 524-8801
Mailing Fax: (248) 524-8850
Is Sole Proprietor?: No
Enumeration Date: 01-02-2018
Last Update Date: 06-05-2019
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Location Map

Secondary Locations

1225 E Big Beaver Rd
Troy, MI 48083
(248) 524-8850

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: Technician/Technologist
Taxonomy Code: 156F00000X
Type: Eye and Vision Services Providers
Taxonomy Description: A broad category grouping different kinds of technologists and technicians. See individual definitions.

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 1689181588, 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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

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 8 → 16 → 7 1 → 2 1 → 2 8 → 16 → 7

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 + 2 + 8 + 2 + 5 + 1 + 6 + 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 1689181588.