WILLIAM H HARRIS SR.
NPI 1255224861
Non-emergency Medical Transport (VAN) in Chicago, IL
NPI Status: Active since June 02, 2025
Contact Information
6544 S EBERHART AVE
CHICAGO, IL
ZIP 60637
Phone: (708) 701-3227
Fax: (708) 606-8037
- Individual
- Male
- Non-emergency Medical Transport (VAN)
About WILLIAM HARRIS
This page provides the complete NPI Profile along with additional information for William Harris, a provider established in Chicago, Illinois with a medical specialization in Non-emergency Medical Transport (van). The healthcare provider is registered in the NPI registry with number 1255224861 assigned on June 2025. The practitioner's primary taxonomy code is 343900000X with license number DW46643 (IL). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1255224861
- Provider Name
- WILLIAM H HARRIS SR.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 6544 S EBERHART AVE CHICAGO, IL 60637
- Location Phone
- (708) 701-3227
- Location Fax
- (708) 606-8037
- Mailing Address
- 5463 YALE LN MATTESON, IL 60443
- Mailing Phone
- (708) 701-3227
- Mailing Fax
- (708) 606-8037
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-02-2025
- Last Update Date
- 06-02-2025
- 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
Non-emergency Medical Transport (VAN)
- Taxonomy Code
- 343900000X
- Type
- Transportation Services
- License No.
- DW46643
- License State
- IL
- Taxonomy Description
- A land vehicle with a capacity to meet special height, clearance, access, and seating, for the conveyance of persons in non-emergency situations. The vehicle may or may not be required to meet local county or state regulations.
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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 1255224861, 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 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 59 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1255224861, enumerated as an "individual" on June 02, 2025.
The provider is located at 6544 S EBERHART AVE CHICAGO, IL 60637 and the phone number is (708) 701-3227.
Non-emergency Medical Transport (VAN) with taxonomy code 343900000X.
