JONATHAN COLLEDGE LCPC
NPI 1356926034
Counselor - Professional in Chicago, IL

NPI Status: Active since March 14, 2021

Contact Information

307 N MICHIGAN AVE STE 412
CHICAGO, IL
ZIP 60601
Phone: (312) 772-4768

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  • Individual
  • Male
  • Counselor
  • Professional

About JONATHAN COLLEDGE

This page provides the complete NPI Profile along with additional information for Jonathan Colledge, a provider established in Chicago, Illinois with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1356926034 assigned on March 2021. The practitioner's primary taxonomy code is 101YP2500X with license number 180.015159 (IL). The provider is registered as an individual and his NPI record was last updated May 2026.

NPI
1356926034
Provider Name
JONATHAN COLLEDGE LCPC
Gender
Male
Entity Type
Individual
Location Address
307 N MICHIGAN AVE STE 412 CHICAGO, IL 60601
Location Phone
(312) 772-4768
Mailing Address
899 SKOKIE BLVD STE 240 NORTHBROOK, IL 60062
Mailing Phone
(312) 772-4768
Is Sole Proprietor?
No
Enumeration Date
03-14-2021
Last Update Date
05-28-2026
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Location Map

Secondary Locations

  • 899 Skokie Blvd Ste 240
    Northbrook, IL 60062
    (815) 496-0620

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.
180.015159
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)
1101YP2500XBehavioral Health & Social Service Providers

Counselor
Professional

178.014206 (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 1356926034, 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
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
6
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
2
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
0
Unchanged
Pos 9
3
Doubled → 6
Check
4
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 5 → 10 → 1 9 → 18 → 9 6 → 12 → 3 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 0 + 6 + 1 + 8 + 2 + 1 + 2 + 0 + 6 + 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 1356926034.

Other Providers at the Same Location


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

Social Worker (Clinical)
307 N MICHIGAN AVE STE 412
CHICAGO, IL 60601
Clinic/Center (Adult Mental Health)
307 N MICHIGAN AVE STE 412
CHICAGO, IL 60601

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1356926034, enumerated as an "individual" on March 14, 2021.

The provider is located at 307 N MICHIGAN AVE STE 412 CHICAGO, IL 60601 and the phone number is (312) 772-4768.

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