MRS. HEATHER DAWN WILLIAMS DPT, C/NDT
NPI 1013888098
Physical Therapist - Neurology in Indianapolis, IN

NPI Status: Active since September 15, 2025

Contact Information

2001 W 86TH ST
INDIANAPOLIS, IN
ZIP 46260
Phone: (317) 338-1197

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

Individual
Female
Physical Therapist
Neurology

About HEATHER WILLIAMS

This page provides the complete NPI Profile along with additional information for Heather Williams, a provider established in Indianapolis, Indiana with a medical specialization in Physical Therapist, focusing in neurology . The healthcare provider is registered in the NPI registry with number 1013888098 assigned on September 2025. The practitioner's primary taxonomy code is 2251N0400X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1013888098
Provider Name: MRS. HEATHER DAWN WILLIAMS DPT, C/NDT
Gender: Female
Entity Type: Individual
Location Address: 2001 W 86TH ST INDIANAPOLIS, IN 46260
Location Phone: (317) 338-1197
Mailing Address: 2001 W 86TH ST INDIANAPOLIS, IN 46260
Is Sole Proprietor?: No
Enumeration Date: 09-15-2025
Last Update Date: 09-15-2025
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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: Physical Therapist Neurology
Taxonomy Code: 2251N0400X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Description: A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Neurologic Physical Therapy, who has demonstrated specialized knowledge and skill in neuroanatomy and neurophysiology, including knowledge of central, peripheral, and autonomic nervous systems in populations with and without neurologic conditions; motor control and movement sciences in populations with and without neurologic conditions; behavioral sciences, including psychology and neuropsychology, and psychiatry; and medical management and pharmacology.

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 1013888098, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 16 → 1 + 6

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 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 8 → 16 → 7 8 → 16 → 7 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 2 + 3 + 1 + 6 + 8 + 1 + 6 + 0 + 1 + 8 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1013888098.