CYNTHIA CASTRO
NPI 1609723378
Social Worker - School in Perris, CA

NPI Status: Active since March 12, 2026

Contact Information

975 MORGAN ST
PERRIS, CA
ZIP 92571
Phone: (951) 940-6100

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

Individual
Female
Social Worker
School

About CYNTHIA CASTRO

This page provides the complete NPI Profile along with additional information for Cynthia Castro, a provider established in Perris, California with a medical specialization in Social Worker, focusing in school . The healthcare provider is registered in the NPI registry with number 1609723378 assigned on March 2026. The practitioner's primary taxonomy code is 1041S0200X with license number 105198 (CA). The provider is registered as an individual and her NPI record was last updated March 2026.

NPI: 1609723378
Provider Name: CYNTHIA CASTRO
Gender: Female
Entity Type: Individual
Location Address: 975 MORGAN ST PERRIS, CA 92571
Location Phone: (951) 940-6100
Mailing Address: 975 MORGAN ST PERRIS, CA 92571
Mailing Phone: (951) 940-6100
Is Sole Proprietor?: No
Enumeration Date: 03-12-2026
Last Update Date: 03-12-2026
Code Navigator

A school social worker like Cynthia Castro 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 No.: 105198
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 1609723378, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 6

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 0 → 0 7 → 14 → 5 3 → 6 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 0 + 9 + 1 + 4 + 2 + 6 + 3 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1609723378.