DR. JOHN FREDERICK CHILDRESS III PH.D.
NPI 1275551673
Psychologist - Health Service in Fredericksburg, VA

NPI Status: Active since July 17, 2006

Contact Information

810 WESTWOOD OFFICE PARK
FREDERICKSBURG, VA
ZIP 22401
Phone: (540) 899-4025
Fax: (540) 374-3313

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

Individual
Male
Psychologist
Health Service

About JOHN CHILDRESS

This page provides the complete NPI Profile along with additional information for John Childress, a provider established in Fredericksburg, Virginia with a medical specialization in Psychologist, focusing in health service . The healthcare provider is registered in the NPI registry with number 1275551673 assigned on July 2006. The practitioner's primary taxonomy code is 103TH0100X with license number 0810002716 (VA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1275551673
Provider Name: DR. JOHN FREDERICK CHILDRESS III PH.D.
Gender: Male
Entity Type: Individual
Location Address: 810 WESTWOOD OFFICE PARK FREDERICKSBURG, VA 22401
Location Phone: (540) 899-4025
Location Fax: (540) 374-3313
Mailing Address: 174 HUNTING GREEN LN KENTS STORE, VA 23084
Mailing Phone: (434) 591-1163
Mailing Fax: (540) 374-3313
Is Sole Proprietor?: Yes
Enumeration Date: 07-17-2006
Last Update Date: 09-11-2025
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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: Psychologist Health Service
Taxonomy Code: 103TH0100X
Type: Behavioral Health & Social Service Providers
License No.: 0810002716
License State: VA
Taxonomy Description: A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	103TC0700X	Behavioral Health & Social Service Providers	Psychologist Clinical	0810002716 (VA)
2	103TC2200X	Behavioral Health & Social Service Providers	Psychologist Clinical Child & Adolescent	0810002716 (VA)

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 1275551673, 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

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 7 → 14 → 5 5 → 10 → 1 1 → 2 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 4 + 5 + 1 + 0 + 5 + 2 + 6 + 1 + 4 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1275551673.