DR. THOMAS SAUNDERS LAYTON DDS
NPI 1992022149
Dentist - General Practice in Charlotte, NC

NPI Status: Active since April 28, 2010

Contact Information

225 NORTH TORRENCE ST
CHARLOTTE, NC
ZIP 28204
Phone: (704) 333-1620
Fax: (704) 332-5052

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  • Individual
  • Male
  • Dentist
  • General Practice

About THOMAS LAYTON

This page provides the complete NPI Profile along with additional information for Thomas Layton, a provider established in Charlotte, North Carolina with a medical specialization in Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1992022149 assigned on April 2010. The practitioner's primary taxonomy code is 1223G0001X with license number NC6358 (NC). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1992022149
Provider Name
DR. THOMAS SAUNDERS LAYTON DDS
Gender
Male
Entity Type
Individual
Location Address
225 NORTH TORRENCE ST CHARLOTTE, NC 28204
Location Phone
(704) 333-1620
Location Fax
(704) 332-5052
Mailing Address
225 N TORRENCE ST CHARLOTTE, NC 28204
Mailing Phone
(704) 333-1620
Mailing Fax
(704) 332-5052
Is Sole Proprietor?
Yes
Enumeration Date
04-28-2010
Last Update Date
04-20-2026
Code Navigator

A dentist like Thomas Layton is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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

Dentist General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
NC6358
License State
NC
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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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 1992022149, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 0 + 2 + 4 + 1 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1992022149.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992022149, enumerated as an "individual" on April 28, 2010.

The provider is located at 225 NORTH TORRENCE ST CHARLOTTE, NC 28204 and the phone number is (704) 333-1620.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.