CATHRINA KOK MA, LPC
NPI 1083580112
Counselor - Professional in Evanston, IL

NPI Status: Active since October 15, 2025

Contact Information

1007 CHURCH ST STE 302
EVANSTON, IL
ZIP 60201
Phone: (847) 492-1938

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  • Individual
  • Female
  • Counselor
  • Professional

About CATHRINA KOK

This page provides the complete NPI Profile along with additional information for Cathrina Kok, a provider established in Evanston, Illinois with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1083580112 assigned on October 2025. The practitioner's primary taxonomy code is 101YP2500X with license number 178022209 (IL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1083580112
Provider Name
CATHRINA KOK MA, LPC
Gender
Female
Entity Type
Individual
Location Address
1007 CHURCH ST STE 302 EVANSTON, IL 60201
Location Phone
(847) 492-1938
Mailing Address
525 S 5TH AVE DES PLAINES, IL 60016
Is Sole Proprietor?
Yes
Enumeration Date
10-15-2025
Last Update Date
10-15-2025
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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.
178022209
License State
IL

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)
1101YM0800XBehavioral Health & Social Service Providers

Counselor
Mental Health

178022209 (IL)

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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 1083580112, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).

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
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
3
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
0
Doubled → 0
Pos 8
1
Unchanged
Pos 9
1
Doubled → 2
Check
2
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 8 → 16 → 7 5 → 10 → 1 0 → 0 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 6 + 3 + 1 + 0 + 8 + 0 + 1 + 2 + 24 = 48

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

The next multiple of ten after 48 is 50. The difference is the calculated check digit.

50 - 48 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1083580112.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Counselor
1007 CHURCH ST STE 302
EVANSTON, IL 60201
Counselor (Mental Health)
1007 CHURCH ST STE 302
EVANSTON, IL 60201
Counselor (Mental Health)
1007 CHURCH ST STE 302
EVANSTON, IL 60201

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1083580112, enumerated as an "individual" on October 15, 2025.

The provider is located at 1007 CHURCH ST STE 302 EVANSTON, IL 60201 and the phone number is (847) 492-1938.

Counselor with taxonomy code 101YP2500X and a focus in Professional.