KAREN MICHELLE OLEJNICZAK PLPC
NPI 1669345682
Counselor - Professional in Saint Louis, MO
NPI Status: Active since September 25, 2025
Contact Information
4144 LINDELL BLVD
SAINT LOUIS, MO
ZIP 63108
Phone: (314) 449-1145
- Individual
- Female
- Counselor
- Professional
About KAREN OLEJNICZAK
This page provides the complete NPI Profile along with additional information for Karen Olejniczak, a provider established in Saint Louis, Missouri with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1669345682 assigned on September 2025. The practitioner's primary taxonomy code is 101YP2500X with license number 2025041994 (MO). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1669345682
- Provider Name
- KAREN MICHELLE OLEJNICZAK PLPC
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 4144 LINDELL BLVD SAINT LOUIS, MO 63108
- Location Phone
- (314) 449-1145
- Mailing Address
- 4144 LINDELL BLVD SAINT LOUIS, MO 63108
- Mailing Phone
- (314) 449-1145
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-25-2025
- Last Update Date
- 09-25-2025
- 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
Counselor Professional
- Taxonomy Code
- 101YP2500X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 2025041994
- License State
- MO
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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 1669345682, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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.
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 68 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
ST LOUIS, MO 63108
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
SAINT LOUIS, MO 63108
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1669345682, enumerated as an "individual" on September 25, 2025.
The provider is located at 4144 LINDELL BLVD SAINT LOUIS, MO 63108 and the phone number is (314) 449-1145.
Counselor with taxonomy code 101YP2500X and a focus in Professional.
