JOAN PAUL
NPI 1316590664
Psychologist - Counseling in Fremont, CA

NPI Status: Active since July 16, 2019

Contact Information

39420 LIBERTY ST STE 252
FREMONT, CA
ZIP 94538
Phone: (925) 825-1793

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

Individual
Female
Psychologist
Counseling

About JOAN PAUL

This page provides the complete NPI Profile along with additional information for Joan Paul, a provider established in Fremont, California with a medical specialization in Psychologist, focusing in counseling . The healthcare provider is registered in the NPI registry with number 1316590664 assigned on July 2019. The practitioner's primary taxonomy code is 103TC1900X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1316590664
Provider Name: JOAN PAUL
Gender: Female
Entity Type: Individual
Location Address: 39420 LIBERTY ST STE 252 FREMONT, CA 94538
Location Phone: (925) 825-1793
Mailing Address: 1333 WILLOW PASS RD STE 200 CONCORD, CA 94520
Mailing Phone: (925) 338-7928
Is Sole Proprietor?: No
Enumeration Date: 07-16-2019
Last Update Date: 08-27-2025
Code Navigator

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: Psychologist Counseling
Taxonomy Code: 103TC1900X
Type: Behavioral Health & Social Service Providers
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.

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 1316590664, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 2

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 1 → 2 5 → 10 → 1 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 2 + 6 + 1 + 0 + 9 + 0 + 6 + 1 + 2 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1316590664.