DR. JANET K BREWER J.D., PSY.D.
NPI 1598100224
Clinical Neuropsychologist in Los Angeles, CA

NPI Status: Active since May 08, 2013

Contact Information

10880 WILSHIRE BLVD STE 1101
LOS ANGELES, CA
ZIP 90024
Phone: (631) 961-6487

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

Individual
Female
Clinical Neuropsychologist

About JANET BREWER

This page provides the complete NPI Profile along with additional information for Janet Brewer, a provider established in Los Angeles, California with a medical specialization in Clinical Neuropsychologist. The healthcare provider is registered in the NPI registry with number 1598100224 assigned on May 2013. The practitioner's primary taxonomy code is 103G00000X with license number 30790 (CA). The provider is registered as an individual and her NPI record was last updated 3 years ago.

NPI: 1598100224
Provider Name: DR. JANET K BREWER J.D., PSY.D.
Gender: Female
Entity Type: Individual
Location Address: 10880 WILSHIRE BLVD STE 1101 LOS ANGELES, CA 90024
Location Phone: (631) 961-6487
Mailing Address: PO BOX 286 PAXTON, IL 60957
Mailing Phone: (631) 961-6487
Is Sole Proprietor?: Yes
Enumeration Date: 05-08-2013
Last Update Date: 07-22-2023
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Location Map

Secondary Locations

124 W State St
Paxton, IL 60957
(631) 961-6487

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: Clinical Neuropsychologist
Taxonomy Code: 103G00000X
Type: Behavioral Health & Social Service Providers
License No.: 30790
License State: CA
Taxonomy Description: A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	101YM0800X	Behavioral Health & Social Service Providers	Counselor Mental Health	180010245 (IL)
2	103T00000X	Behavioral Health & Social Service Providers	Psychologist	30790 (CA)
3	225C00000X	Respiratory, Developmental, Rehabilitative and Restorative Service Providers	Rehabilitation Counselor	180010245 (IL)

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 1598100224, 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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 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 9 → 18 → 9 1 → 2 0 → 0 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 8 + 8 + 2 + 0 + 0 + 2 + 4 + 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 1598100224.