WILLIAM S PAYNE LPC
NPI 1790619815
Counselor - Professional in Mountain City, TN

NPI Status: Active since June 12, 2026

Contact Information

318 DONNELLY ST
MOUNTAIN CITY, TN
ZIP 37683
Phone: (423) 727-2100
Fax: (423) 727-2110

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  • Individual
  • Male
  • Counselor
  • Professional

About WILLIAM PAYNE

This page provides the complete NPI Profile along with additional information for William Payne, a provider established in Mountain City, Tennessee with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1790619815 assigned on June 2026. The practitioner's primary taxonomy code is 101YP2500X with license number 8645 (TN). The provider is registered as an individual and his NPI record was last updated June 2026.

NPI
1790619815
Provider Name
WILLIAM S PAYNE LPC
Gender
Male
Entity Type
Individual
Location Address
318 DONNELLY ST MOUNTAIN CITY, TN 37683
Location Phone
(423) 727-2100
Location Fax
(423) 727-2110
Mailing Address
1167 SPRATLIN PARK DR GRAY, TN 37615
Mailing Phone
(423) 467-3600
Mailing Fax
(423) 727-2110
Is Sole Proprietor?
No
Enumeration Date
06-12-2026
Last Update Date
06-12-2026
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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

Counselor Professional

Taxonomy Code
101YP2500X
Type
Behavioral Health & Social Service Providers
License No.
8645
License State
TN

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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 1790619815, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
8
Unchanged
Pos 9
1
Doubled → 2
Check
5
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 9 → 18 → 9 6 → 12 → 3 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 8 + 0 + 1 + 2 + 1 + 1 + 8 + 8 + 2 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1790619815.

Other Providers at the Same Location


The following 15 providers are registered at the same or a nearby location.

Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MT CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST, JOHNSON CO COUNSELING CENTER
MOUNTAIN CITY, TN 37683
Counselor (Mental Health)
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Counselor (Professional)
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Psychologist (Clinical)
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Case Manager/Care Coordinator
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Clinic/Center (Mental Health (Including Community Mental Health Center))
318 DONNELLY ST
MOUNTAIN CITY, TN 37683
Social Worker (Clinical)
318 DONNELLY ST
MOUNTAIN CITY, TN 37683

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790619815, enumerated as an "individual" on June 12, 2026.

The provider is located at 318 DONNELLY ST MOUNTAIN CITY, TN 37683 and the phone number is (423) 727-2100.

Counselor with taxonomy code 101YP2500X and a focus in Professional.