LESLIE KAROLINA ARRIAZA
NPI 1154295129
Social Worker - School in Fullerton, CA
NPI Status: Active since October 02, 2025
Contact Information
1501 W VALENCIA DR
FULLERTON, CA
ZIP 92833
Phone: (714) 447-7735
- Individual
- Female
- Social Worker
- School
About LESLIE ARRIAZA
This page provides the complete NPI Profile along with additional information for Leslie Arriaza, a provider established in Fullerton, California with a medical specialization in Social Worker, focusing in school . The healthcare provider is registered in the NPI registry with number 1154295129 assigned on October 2025. The practitioner's primary taxonomy code is 1041S0200X. The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1154295129
- Provider Name
- LESLIE KAROLINA ARRIAZA
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1501 W VALENCIA DR FULLERTON, CA 92833
- Location Phone
- (714) 447-7735
- Mailing Address
- 11437 HUTTON RD CORONA, CA 92883
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-02-2025
- Last Update Date
- 10-24-2025
- Code Navigator
A school social worker like Leslie Arriaza works with teachers, parents, and school administrators to develop plans and strategies to improve students' academic performance and social development. Students are referred to school social workers to deal with problems like aggressive behavior, bullying, or frequent school absences.
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
Social Worker School
- Taxonomy Code
- 1041S0200X
- Type
- Behavioral Health & Social Service Providers
- License State
- CA
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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 1154295129, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 51 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1154295129, enumerated as an "individual" on October 02, 2025.
The provider is located at 1501 W VALENCIA DR FULLERTON, CA 92833 and the phone number is (714) 447-7735.
Social Worker with taxonomy code 1041S0200X and a focus in School.
