STEFON MERSUNDAY WILLIAMS
NPI 1689546483
Massage Therapist in Atlanta, GA

NPI Status: Active since September 22, 2025

Contact Information

1755 THE EXCHANGE SE STE 342
ATLANTA, GA
ZIP 30339
Phone: (843) 684-0967

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  • Individual
  • Male
  • Massage Therapist

About STEFON WILLIAMS

This page provides the complete NPI Profile along with additional information for Stefon Williams, a provider established in Atlanta, Georgia with a medical specialization in Massage Therapist. The healthcare provider is registered in the NPI registry with number 1689546483 assigned on September 2025. The practitioner's primary taxonomy code is 225700000X with license number MT013535 (GA). The provider is registered as an individual and his NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1689546483
Provider Name
STEFON MERSUNDAY WILLIAMS
Gender
Male
Entity Type
Individual
Location Address
1755 THE EXCHANGE SE STE 342 ATLANTA, GA 30339
Location Phone
(843) 684-0967
Mailing Address
1755 THE EXCHANGE SE STE 342 ATLANTA, GA 30339
Mailing Phone
(843) 684-0967
Is Sole Proprietor?
Yes
Enumeration Date
09-22-2025
Last Update Date
09-22-2025
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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

Massage Therapist

Taxonomy Code
225700000X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
MT013535
License State
GA
Taxonomy Description
An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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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 1689546483, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
4
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
4
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
3
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 5 → 10 → 1 6 → 12 → 3 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 + 1 + 0 + 4 + 1 + 2 + 4 + 1 + 6 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1689546483.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Hospice Care, Community Based
1755 THE EXCHANGE SE STE 342
ATLANTA, GA 30339

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689546483, enumerated as an "individual" on September 22, 2025.

The provider is located at 1755 THE EXCHANGE SE STE 342 ATLANTA, GA 30339 and the phone number is (843) 684-0967.

Massage Therapist with taxonomy code 225700000X.