THORNTON THERAPY
NPI 1124951702
Counselor - Mental Health in Chicago, IL

NPI Status: Active since June 04, 2026

Contact Information

600 S DEARBORN ST APT 1603
CHICAGO, IL
ZIP 60605
Phone: (503) 504-5886

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  • Organization
  • Counselor
  • Mental Health

About THORNTON THERAPY

This page provides the complete NPI Profile along with additional information for Thornton Therapy, a provider established in Chicago, Illinois operating as a Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1124951702 assigned on June 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an organization and their NPI record was last updated June 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Grace Thornton Lpc (Lpc)

NPI
1124951702
Provider Name
THORNTON THERAPY
Entity Type
Organization
Location Address
600 S DEARBORN ST APT 1603 CHICAGO, IL 60605
Location Phone
(503) 504-5886
Mailing Address
600 S DEARBORN ST APT 1603 CHICAGO, IL 60605
Mailing Phone
(503) 504-5886
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
06-04-2026
Last Update Date
06-04-2026
Code Navigator

A mental health counselor like Thornton Therapy 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

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

GRACE THORNTON LPC

Authorized Official Title
LPC
Authorized Official Phone
(503) 504-5886

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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 1124951702, 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 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
1
Unchanged
Pos 3
2
Doubled → 4
Pos 4
4
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
5
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
0
Doubled → 0
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 2 → 4 9 → 18 → 9 1 → 2 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 1 + 8 + 5 + 2 + 7 + 0 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1124951702.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1124951702, enumerated as an "organization" on June 04, 2026.

The provider is located at 600 S DEARBORN ST APT 1603 CHICAGO, IL 60605 and the phone number is (503) 504-5886.

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