MARK LAMONT JOHNSON
NPI 1609463801
Psychologist - Intellectual and Developmental Disabilities in Toledo, OH
NPI Status: Active since December 22, 2020
Contact Information
5626 CRESTHAVEN LN
TOLEDO, OH
ZIP 43614
Phone: (419) 810-4375
- Individual
- Male
- Psychologist
- Intellectual and Developmental Disabilit...
About MARK JOHNSON
This page provides the complete NPI Profile along with additional information for Mark Johnson, a provider established in Toledo, Ohio with a medical specialization in Psychologist, focusing in intellectual and developmental disabilities . The healthcare provider is registered in the NPI registry with number 1609463801 assigned on December 2020. The practitioner's primary taxonomy code is 103TM1800X with license number 8702313 (OH). The provider is registered as an individual and his NPI record was last updated 5 years ago.
- NPI
- 1609463801
- Provider Name
- MARK LAMONT JOHNSON
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 5626 CRESTHAVEN LN TOLEDO, OH 43614
- Location Phone
- (419) 810-4375
- Mailing Address
- 5626 CRESTHAVEN LN TOLEDO, OH 43614
- Mailing Phone
- (419) 810-4375
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-22-2020
- Last Update Date
- 12-22-2020
- 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
Psychologist Intellectual and Developmental Disabilities
- Taxonomy Code
- 103TM1800X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 8702313
- License State
- OH
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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 1609463801, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).
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 69 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1609463801, enumerated as an "individual" on December 22, 2020.
The provider is located at 5626 CRESTHAVEN LN TOLEDO, OH 43614 and the phone number is (419) 810-4375.
Psychologist with taxonomy code 103TM1800X and a focus in Intellectual and Developmental Disabilities.
