JOHN R FISK M.D.
NPI 1154317113
Orthopaedic Surgery in Springfield, IL
- Individual
- Male
- Orthopaedic Surgery
About JOHN FISK
This page provides the complete NPI Profile along with additional information for John Fisk, a provider established in Springfield, Illinois with a medical specialization in Orthopaedic Surgery. The healthcare provider is registered in the NPI registry with number 1154317113 assigned on September 2005. The practitioner's primary taxonomy code is 207X00000X. The provider is registered as an individual and his NPI record was last updated July 2026.
- NPI
- 1154317113
- Provider Name
- JOHN R FISK M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 301 N 8TH ST SPRINGFIELD, IL 62701
- Location Phone
- (217) 545-7500
- Location Fax
- (217) 545-7305
- Mailing Address
- PO BOX 19639 SPRINGFIELD, IL 62794
- Mailing Phone
- (217) 545-7578
- Mailing Fax
- (217) 545-1884
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-26-2005
- Last Update Date
- 07-13-2026
- 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
Orthopaedic Surgery
- Taxonomy Code
- 207X00000X
- Type
- Allopathic & Osteopathic Physicians
- License State
- IL
- Taxonomy Description
- An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
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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 1154317113, we treat the final digit (3) 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 47. The final step is to find the difference between that total and the next multiple of ten (50 - 47 = 3).
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 47 is 50. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
SPRINGFIELD, IL 62701
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1154317113, enumerated as an "individual" on September 26, 2005.
The provider is located at 301 N 8TH ST SPRINGFIELD, IL 62701 and the phone number is (217) 545-7500.
Orthopaedic Surgery with taxonomy code 207X00000X.
