DR. JOHN CRAIG WILLIAMSON EDD
NPI 1124295589
Psychologist - Counseling in Seward, AK

NPI Status: Active since May 14, 2008

Contact Information

11724 SEWARD HWY
SUITE E
SEWARD, AK
ZIP 99664
Phone: (907) 362-1804

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  • Individual
  • Male
  • Psychologist
  • Counseling

About JOHN WILLIAMSON

This page provides the complete NPI Profile along with additional information for John Williamson, a provider established in Seward, Alaska with a medical specialization in Psychologist, focusing in counseling . The healthcare provider is registered in the NPI registry with number 1124295589 assigned on May 2008. The practitioner's primary taxonomy code is 103TC1900X with license number 470 (AK). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1124295589
Provider Name
DR. JOHN CRAIG WILLIAMSON EDD
Gender
Male
Entity Type
Individual
Location Address
11724 SEWARD HWY SUITE E SEWARD, AK 99664
Location Phone
(907) 362-1804
Mailing Address
PO BOX 2732 SEWARD, AK 99664
Mailing Phone
(907) 224-2476
Is Sole Proprietor?
Yes
Enumeration Date
05-14-2008
Last Update Date
05-14-2008
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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 Counseling

Taxonomy Code
103TC1900X
Type
Behavioral Health & Social Service Providers
License No.
470
License State
AK
Taxonomy Description
A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.

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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 1124295589, 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
1
Unchanged
Pos 3
2
Doubled → 4
Pos 4
4
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 2 → 4 2 → 4 5 → 10 → 1 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 4 + 9 + 1 + 0 + 5 + 1 + 6 + 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 1124295589.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Physician Assistant
11724 SEWARD HWY, STE D
SEWARD, AK 99664
Physician Assistant
11724 SEWARD HWY, STE D
SEWARD, AK 99664
Psychologist (Counseling)
11724 SEWARD HWY, SUITE E
SEWARD, AK 99664

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1124295589, enumerated as an "individual" on May 14, 2008.

The provider is located at 11724 SEWARD HWY SUITE E SEWARD, AK 99664 and the phone number is (907) 362-1804.

Psychologist with taxonomy code 103TC1900X and a focus in Counseling.