LEONARD SONNENSCHEIN
NPI 1003745910
Clinic/Center - Research in Boca Raton, FL
NPI Status: Active since May 16, 2026
Contact Information
6617 NW 24TH AVE
BOCA RATON, FL
ZIP 33496
Phone: (314) 609-2798
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Male
- Clinic/Center
- Research
About LEONARD SONNENSCHEIN
This page provides the complete NPI Profile along with additional information for Leonard Sonnenschein, a provider established in Boca Raton, Florida with a medical specialization in Clinic/center, focusing in research . The healthcare provider is registered in the NPI registry with number 1003745910 assigned on May 2026. The practitioner's primary taxonomy code is 261QR1100X. The provider is registered as an individual and his NPI record was last updated May 2026.
- NPI
- 1003745910
- Provider Name
- LEONARD SONNENSCHEIN
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 6617 NW 24TH AVE BOCA RATON, FL 33496
- Location Phone
- (314) 609-2798
- Mailing Address
- 6617 NW 24TH AVE BOCA RATON, FL 33496
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-16-2026
- Last Update Date
- 05-16-2026
- 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 Research
- Taxonomy Code
- 261QR1100X
- Type
- Ambulatory Health Care Facilities
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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 1003745910, we treat the final digit (0) 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).
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 50 is 50. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1003745910, enumerated as an "individual" on May 16, 2026.
The provider is located at 6617 NW 24TH AVE BOCA RATON, FL 33496 and the phone number is (314) 609-2798.
Clinic/Center with taxonomy code 261QR1100X and a focus in Research.
