TRACY COLBY OTR/L
NPI 1033526371
Specialist in Hudson, MA

NPI Status: Active since July 18, 2014

Contact Information

2 COOLIDGE ST
HUDSON, MA
ZIP 01749
Phone: (978) 568-8800

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

Individual
Female
Specialist

About TRACY COLBY

This page provides the complete NPI Profile along with additional information for Tracy Colby, a provider established in Hudson, Massachusetts with a medical specialization in Specialist. The healthcare provider is registered in the NPI registry with number 1033526371 assigned on July 2014. The practitioner's primary taxonomy code is 174400000X with license number 6920 (MA). The provider is registered as an individual and her NPI record was last updated 12 years ago.

NPI: 1033526371
Provider Name: TRACY COLBY OTR/L
Gender: Female
Entity Type: Individual
Location Address: 2 COOLIDGE ST HUDSON, MA 01749
Location Phone: (978) 568-8800
Mailing Address: 2 COOLIDGE ST HUDSON, MA 01749
Mailing Phone: (978) 568-8800
Is Sole Proprietor?: No
Enumeration Date: 07-18-2014
Last Update Date: 07-18-2014
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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: Specialist
Taxonomy Code: 174400000X
Type: Other Service Providers
License No.: 6920
License State: MA
Taxonomy Description: An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

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 1033526371, we treat the final digit (1) 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 49. The final step is to find the difference between that total and the next multiple of ten (50 - 49 = 1).

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 → 6

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

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 3 → 6 5 → 10 → 1 6 → 12 → 3 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 6 + 3 + 1 + 0 + 2 + 1 + 2 + 3 + 1 + 4 + 24 = 49

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

The next multiple of ten after 49 is 50. The difference is the calculated check digit.

50 - 49 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1033526371.