MR. LEONIDAS NICKOLAOS LOUKAS
NPI 1881969699
Counselor in Chicago, IL

NPI Status: Active since March 12, 2012

Contact Information

4723 W LAWRENCE AVE
CHICAGO, IL
ZIP 60630
Phone: (847) 373-0047
Fax: (888) 400-0610

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  • Individual
  • Male
  • Counselor

About LEONIDAS LOUKAS

This page provides the complete NPI Profile along with additional information for Leonidas Loukas, a provider established in Chicago, Illinois with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1881969699 assigned on March 2012. The practitioner's primary taxonomy code is 101Y00000X with license number 180.007923 (IL). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1881969699
Provider Name
MR. LEONIDAS NICKOLAOS LOUKAS
Gender
Male
Entity Type
Individual
Location Address
4723 W LAWRENCE AVE CHICAGO, IL 60630
Location Phone
(847) 373-0047
Location Fax
(888) 400-0610
Mailing Address
4723 W LAWRENCE AVE CHICAGO, IL 60630
Mailing Phone
(847) 373-0047
Mailing Fax
(888) 400-0610
Is Sole Proprietor?
Yes
Enumeration Date
03-12-2012
Last Update Date
02-15-2021
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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

Taxonomy Code
101Y00000X
Type
Behavioral Health & Social Service Providers
License No.
180.007923
License State
IL
Taxonomy Description
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

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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 1881969699, 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 81. The final step is to find the difference between that total and the next multiple of ten (90 - 81 = 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.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
6
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 9 → 18 → 9 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 1 + 8 + 6 + 1 + 8 + 6 + 1 + 8 + 24 = 81

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

The next multiple of ten after 81 is 90. The difference is the calculated check digit.

90 - 81 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1881969699.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Counselor
4723 W LAWRENCE AVE
CHICAGO, IL 60630

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1881969699, enumerated as an "individual" on March 12, 2012.

The provider is located at 4723 W LAWRENCE AVE CHICAGO, IL 60630 and the phone number is (847) 373-0047.

Counselor with taxonomy code 101Y00000X.