LEAH SIMONSON
NPI 1265372122
Counselor - School in Baltimore, MD
NPI Status: Active since March 31, 2026
Contact Information
801 ARGONNE DR
BALTIMORE, MD
ZIP 21218
Phone: (410) 889-5054
- Individual
- Female
- Counselor
- School
About LEAH SIMONSON
This page provides the complete NPI Profile along with additional information for Leah Simonson, a provider established in Baltimore, Maryland with a medical specialization in Counselor, focusing in school . The healthcare provider is registered in the NPI registry with number 1265372122 assigned on March 2026. The practitioner's primary taxonomy code is 101YS0200X. The provider is registered as an individual and her NPI record was last updated March 2026.
- NPI
- 1265372122
- Provider Name
- LEAH SIMONSON
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 801 ARGONNE DR BALTIMORE, MD 21218
- Location Phone
- (410) 889-5054
- Mailing Address
- 314 S MADEIRA ST BALTIMORE, MD 21231
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-31-2026
- Last Update Date
- 03-31-2026
- 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
Counselor School
- Taxonomy Code
- 101YS0200X
- Type
- Behavioral Health & Social Service Providers
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 | 101YM0800X | Behavioral Health & Social Service Providers | Counselor |
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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 1265372122, 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.
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 58 is 60. The difference is the calculated check digit.
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The following 20 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1265372122, enumerated as an "individual" on March 31, 2026.
The provider is located at 801 ARGONNE DR BALTIMORE, MD 21218 and the phone number is (410) 889-5054.
Counselor with taxonomy code 101YS0200X and a focus in School.
