MR. DARRYL A WILLETT SA
NPI 1669655304
in Cincinnati, OH

NPI Status: Active since December 17, 2007

Contact Information

7575 5 MILE RD
CINCINNATI, OH
ZIP 45230
Phone: (513) 232-6677
Fax: (513) 232-2522

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

Individual
Male

About DARRYL WILLETT

This page provides the complete NPI Profile along with additional information for Darryl Willett, a provider established in Cincinnati, Ohio with a medical specialization in . The healthcare provider is registered in the NPI registry with number 1669655304 assigned on December 2007. The practitioner's primary taxonomy code is 246ZS0400X. The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI: 1669655304
Provider Name: MR. DARRYL A WILLETT SA
Gender: Male
Entity Type: Individual
Location Address: 7575 5 MILE RD CINCINNATI, OH 45230
Location Phone: (513) 232-6677
Location Fax: (513) 232-2522
Mailing Address: 4701 CREEK RD SUITE 110 CINCINNATI, OH 45242
Mailing Phone: (513) 618-9011
Mailing Fax: (513) 232-2522
Is Sole Proprietor?: No
Enumeration Date: 12-17-2007
Last Update Date: 10-13-2011
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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
Taxonomy Code: 246ZS0400X
Type

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 1669655304, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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 → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

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 6 → 12 → 3 6 → 12 → 3 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 2 + 9 + 1 + 2 + 5 + 1 + 0 + 3 + 0 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1669655304.