JUSTINE STEWART PSYD
NPI 1548105307
Psychologist - Health in Chicago, IL
NPI Status: Active since April 20, 2026
Contact Information
1351 S HALSTED ST UNIT 206
CHICAGO, IL
ZIP 60607
Phone: (708) 209-9830
- Individual
- Female
- Psychologist
- Health
About JUSTINE STEWART
This page provides the complete NPI Profile along with additional information for Justine Stewart, a provider established in Chicago, Illinois with a medical specialization in Psychologist, focusing in health . The healthcare provider is registered in the NPI registry with number 1548105307 assigned on April 2026. The practitioner's primary taxonomy code is 103TH0004X with license number 071.022670 (IL). The provider is registered as an individual and her NPI record was last updated April 2026.
- NPI
- 1548105307
- Provider Name
- JUSTINE STEWART PSYD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1351 S HALSTED ST UNIT 206 CHICAGO, IL 60607
- Location Phone
- (708) 209-9830
- Mailing Address
- 1351 S HALSTED ST UNIT 206 CHICAGO, IL 60607
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-20-2026
- Last Update Date
- 04-20-2026
- Code Navigator
Location Map
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
Psychologist Health
- Taxonomy Code
- 103TH0004X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 071.022670
- License State
- IL
- Taxonomy Description
- A psychologist who specializes in clinical health psychology that investigates and implements clinical services across diverse populations and settings to promote health and well-being and to prevent, treat, and manage illness and disability. Clinical health psychology sees health as the confluence of psychological, social, cultural, and biological factors and applies this understanding to professional activities including:
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) |
|---|---|---|---|---|
| 1 | 103TH0004X | Behavioral Health & Social Service Providers | Psychologist | 07377 (MD) |
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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 1548105307, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 53 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1548105307, enumerated as an "individual" on April 20, 2026.
The provider is located at 1351 S HALSTED ST UNIT 206 CHICAGO, IL 60607 and the phone number is (708) 209-9830.
Psychologist with taxonomy code 103TH0004X and a focus in Health.
