KARLYN JOHNSON
NPI 1548087398
Counselor - Professional in Fountain Valley, CA

NPI Status: Active since September 23, 2024

Contact Information

17350 MOUNT HERRMANN ST STE A
FOUNTAIN VALLEY, CA
ZIP 92708
Phone: (714) 444-3463

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

Individual
Female
Counselor
Professional

About KARLYN JOHNSON

This page provides the complete NPI Profile along with additional information for Karlyn Johnson, a provider established in Fountain Valley, California with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1548087398 assigned on September 2024. The practitioner's primary taxonomy code is 101YP2500X with license number 8320 (CA). The provider is registered as an individual and her NPI record was last updated 2 years ago.

NPI: 1548087398
Provider Name: KARLYN JOHNSON
Gender: Female
Entity Type: Individual
Location Address: 17350 MOUNT HERRMANN ST STE A FOUNTAIN VALLEY, CA 92708
Location Phone: (714) 444-3463
Mailing Address: 647 CAMINO DE LOS MARES STE 108-123 SAN CLEMENTE, CA 92673
Mailing Phone: (661) 904-8331
Is Sole Proprietor?: No
Enumeration Date: 09-23-2024
Last Update Date: 09-23-2024
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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.: 8320
License State: CA

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 1548087398, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

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 4 → 8 0 → 0 7 → 14 → 5 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 8 + 8 + 0 + 8 + 1 + 4 + 3 + 1 + 8 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1548087398.