LESLIE ANNE WILLIAMS
NPI 1659208494
Social Worker in Pensacola, FL

NPI Status: Active since May 06, 2026

Contact Information

1221 W LAKEVIEW AVE
PENSACOLA, FL
ZIP 32501
Phone: (850) 469-3500
Fax: (850) 595-1400

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Newly Listed Provider
This NPI profile has been added to the NPI registry within the last 30 days.

Table of Contents

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

Individual
Female
Social Worker

About LESLIE WILLIAMS

This page provides the complete NPI Profile along with additional information for Leslie Williams, a provider established in Pensacola, Florida with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1659208494 assigned on May 2026. The practitioner's primary taxonomy code is 104100000X with license number ISW21784 (FL). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI: 1659208494
Provider Name: LESLIE ANNE WILLIAMS
Gender: Female
Entity Type: Individual
Location Address: 1221 W LAKEVIEW AVE PENSACOLA, FL 32501
Location Phone: (850) 469-3500
Location Fax: (850) 595-1400
Mailing Address: 1221 W LAKEVIEW AVE PENSACOLA, FL 32501
Mailing Phone: (850) 469-3500
Mailing Fax: (850) 595-1400
Is Sole Proprietor?: No
Enumeration Date: 05-06-2026
Last Update Date: 05-06-2026
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A social worker like Leslie Williams helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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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: Social Worker
Taxonomy Code: 104100000X
Type: Behavioral Health & Social Service Providers
License No.: ISW21784
License State: FL
Taxonomy Description: A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

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 1659208494, 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 4

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 5 → 10 → 1 2 → 4 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 + 6 + 1 + 0 + 9 + 4 + 0 + 1 + 6 + 4 + 1 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1659208494.