JONATHAN CONNOR SELF
NPI 1649069816
Counselor - School in Dixon, IL
NPI Status: Active since May 05, 2025
- Individual
- Male
- Counselor
- School
About JONATHAN SELF
This page provides the complete NPI Profile along with additional information for Jonathan Self, a provider established in Dixon, Illinois with a medical specialization in Counselor, focusing in school . The healthcare provider is registered in the NPI registry with number 1649069816 assigned on May 2025. The practitioner's primary taxonomy code is 101YS0200X with license number 899731 (IL). The provider is registered as an individual and his NPI record was last updated one year ago. Jonathan Self operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.
- NPI
- 1649069816
- Provider Name
- JONATHAN CONNOR SELF
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 640 2ND AVE DIXON, IL 61021
- Location Phone
- (630) 770-8983
- Mailing Address
- 640 2ND AVE DIXON, IL 61021
- Mailing Phone
- (630) 770-8983
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-05-2025
- Last Update Date
- 05-05-2025
- 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 School
- Taxonomy Code
- 101YS0200X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 899731
- License State
- IL
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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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 1649069816, we treat the final digit (6) 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).
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 74 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1649069816, enumerated as an "individual" on May 05, 2025.
The provider is located at 640 2ND AVE DIXON, IL 61021 and the phone number is (630) 770-8983.
Counselor with taxonomy code 101YS0200X and a focus in School.
