WILLIAM CLARK
NPI 1508727231
Counselor in Pascagoula, MS
NPI Status: Active since November 21, 2025
Contact Information
4211 HOSPITAL ST
PASCAGOULA, MS
ZIP 39581
Phone: (228) 217-9625
- Individual
- Male
- Counselor
About WILLIAM CLARK
This page provides the complete NPI Profile along with additional information for William Clark, a provider established in Pascagoula, Mississippi with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1508727231 assigned on November 2025. The practitioner's primary taxonomy code is 101Y00000X. The provider is registered as an individual and his NPI record was last updated March 2026.
- NPI
- 1508727231
- Provider Name
- WILLIAM CLARK
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 4211 HOSPITAL ST PASCAGOULA, MS 39581
- Location Phone
- (228) 217-9625
- Mailing Address
- 916 LIME ST OCEAN SPRINGS, MS 39564
- Mailing Phone
- (228) 217-9625
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 11-21-2025
- Last Update Date
- 03-09-2026
- Code Navigator
Location Map
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
Counselor
- Taxonomy Code
- 101Y00000X
- Type
- Behavioral Health & Social Service Providers
- License State
- MS
- Taxonomy Description
- A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.
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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 1508727231, 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 59 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 19 providers are registered at the same or a nearby location.
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
PASCAGOULA, MS 39581
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1508727231, enumerated as an "individual" on November 21, 2025.
The provider is located at 4211 HOSPITAL ST PASCAGOULA, MS 39581 and the phone number is (228) 217-9625.
Counselor with taxonomy code 101Y00000X.
