OPAL PSYCHOTHERAPY, PLLC
NPI 1265360564
Clinic/Center - Adult Mental Health in Chicago, IL
NPI Status: Active since May 08, 2026
Contact Information
3436 N HAMILTON AVE APT 1
CHICAGO, IL
ZIP 60618
Phone: (312) 970-1087
This NPI profile has been added to the NPI registry within the last 30 days.
- Organization
- Clinic/Center
- Adult Mental Health
About OPAL PSYCHOTHERAPY, PLLC
This page provides the complete NPI Profile along with additional information for Opal Psychotherapy, Pllc, a provider established in Chicago, Illinois operating as a Clinic/center, focusing in adult mental health . The healthcare provider is registered in the NPI registry with number 1265360564 assigned on May 2026. The practitioner's primary taxonomy code is 261QM0850X. The provider is registered as an organization and their NPI record was last updated May 2026. The authorized official of this NPI record is Meredith Michelle Mcquiston Lcsw (Owner)
- NPI
- 1265360564
- Provider Name
- OPAL PSYCHOTHERAPY, PLLC
- Entity Type
- Organization
- Location Address
- 3436 N HAMILTON AVE APT 1 CHICAGO, IL 60618
- Location Phone
- (312) 970-1087
- Mailing Address
- 3436 N HAMILTON AVE APT 1 CHICAGO, IL 60618
- Mailing Phone
- (312) 970-1087
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-08-2026
- Last Update Date
- 05-29-2026
- 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
Clinic/Center Adult Mental Health
- Taxonomy Code
- 261QM0850X
- Type
- Ambulatory Health Care Facilities
- Taxonomy Description
- An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disorders in adults.
Reviews for OPAL PSYCHOTHERAPY, PLLC
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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 1265360564, 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.
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 56 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1265360564, enumerated as an "organization" on May 08, 2026.
The provider is located at 3436 N HAMILTON AVE APT 1 CHICAGO, IL 60618 and the phone number is (312) 970-1087.
Clinic/Center with taxonomy code 261QM0850X and a focus in Adult Mental Health.
