NICHOLAS THOMAS DUKA LPC, NCC
NPI 1407655996
Counselor - Mental Health in Rockford, IL

NPI Status: Active since March 10, 2025

Contact Information

6845 WEAVER RD STE 100
ROCKFORD, IL
ZIP 61114
Phone: (331) 645-7860

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  • Individual
  • Male
  • Counselor
  • Mental Health

About NICHOLAS DUKA

This page provides the complete NPI Profile along with additional information for Nicholas Duka, a provider established in Rockford, Illinois with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1407655996 assigned on March 2025. The practitioner's primary taxonomy code is 101YM0800X with license number 178.021393 (IL). The provider is registered as an individual and his NPI record was last updated one year ago. Nicholas Duka operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI
1407655996
Provider Name
NICHOLAS THOMAS DUKA LPC, NCC
Gender
Male
Entity Type
Individual
Location Address
6845 WEAVER RD STE 100 ROCKFORD, IL 61114
Location Phone
(331) 645-7860
Mailing Address
427 JOY DR SYCAMORE, IL 60178
Mailing Phone
(331) 645-7860
Is Sole Proprietor?
Yes
Enumeration Date
03-10-2025
Last Update Date
03-10-2025
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A mental health counselor like Nicholas Duka provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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 Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
178.021393
License State
IL

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

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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 1407655996, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
4
Unchanged
Pos 3
0
Doubled → 0
Pos 4
7
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
5
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
6
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 6 → 12 → 3 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 0 + 7 + 1 + 2 + 5 + 1 + 0 + 9 + 1 + 8 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1407655996.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Counselor (Professional)
6845 WEAVER RD STE 100
ROCKFORD, IL 61114
Social Worker (Clinical)
6845 WEAVER RD STE 100
ROCKFORD, IL 61114

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1407655996, enumerated as an "individual" on March 10, 2025.

The provider is located at 6845 WEAVER RD STE 100 ROCKFORD, IL 61114 and the phone number is (331) 645-7860.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.