DR. BERTRAM P. IRSLINGER OD.
NPI 1386653806
Optometrist - Sports Vision in Mchenry, IL
NPI Status: Active since August 05, 2006
Contact Information
409 FRONT ST
MCHENRY, IL
ZIP 60050
Phone: (815) 385-1590
Fax: (815) 385-1605
- Individual
- Male
- Optometrist
- Sports Vision
About BERTRAM IRSLINGER
This page provides the complete NPI Profile along with additional information for Bertram Irslinger, a provider established in Mchenry, Illinois with a medical specialization in Optometrist, focusing in sports vision . The healthcare provider is registered in the NPI registry with number 1386653806 assigned on August 2006. The practitioner's primary taxonomy code is 152WS0006X. The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1386653806
- Provider Name
- DR. BERTRAM P. IRSLINGER OD.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 409 FRONT ST MCHENRY, IL 60050
- Location Phone
- (815) 385-1590
- Location Fax
- (815) 385-1605
- Mailing Address
- 409 FRONT ST MCHENRY, IL 60050
- Mailing Phone
- (815) 385-1590
- Mailing Fax
- (815) 385-1605
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 08-05-2006
- Last Update Date
- 09-11-2025
- 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
Optometrist Sports Vision
- Taxonomy Code
- 152WS0006X
- Type
- Eye and Vision Services Providers
- License State
- IL
- Taxonomy Description
- An optometrist who offers services designed to care for unique vision care needs of athletes, which may include one of more of the following services: corrective vision care unique to a specific sporting environment; protective eyewear for the prevention of sports-related injuries; vision enhancement - which may include vision therapy and techniques to improve visual skills specific to the athlete's sport.
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 | 152W00000X | Eye and Vision Services Providers | Optometrist | (IL) |
| 2 | 152WC0802X | Eye and Vision Services Providers | Optometrist | (IL) |
| 3 | 152WX0102X | Eye and Vision Services Providers | Optometrist | (IL) |
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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 1386653806, 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 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 64 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 1 provider is registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1386653806, enumerated as an "individual" on August 05, 2006.
The provider is located at 409 FRONT ST MCHENRY, IL 60050 and the phone number is (815) 385-1590.
Optometrist with taxonomy code 152WS0006X and a focus in Sports Vision.
