DR. JOHN PATRICK WALSH DO
NPI 1740854439
Orthopaedic Surgery in London, ONTARIO
NPI Status: Active since May 17, 2021
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Male
- Orthopaedic Surgery
- PECOS Enrolled
About JOHN WALSH
This page provides the complete NPI Profile along with additional information for John Walsh, a provider established in London, with a medical specialization in Orthopaedic Surgery. The healthcare provider is registered in the NPI registry with number 1740854439 assigned on May 2021. The practitioner's primary taxonomy code is 207X00000X with license number SL1719 (NV). The provider is registered as an individual and his NPI record was last updated June 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.
- NPI
- 1740854439
- Provider Name
- DR. JOHN PATRICK WALSH DO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 339 WINDERMERE RD LONDON, ONTARIO N6A 5
- Location Phone
- Mailing Address
- 800 COMMISSIONERS RD E ROOM E1-320A LONDON, ONTARIO N6A 5
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-17-2021
- Last Update Date
- 06-26-2026
- 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 No.
- SL1719
- License State
- NV
- 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.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
Medicare Participation & PECOS Enrollment Status
John Walsh is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
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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 1740854439, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).
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 71 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
LONDON, ON 655
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1740854439, enumerated as an "individual" on May 17, 2021.
The provider is located at 339 WINDERMERE RD LONDON, ONTARIO N6A 5 and the phone number is .
Orthopaedic Surgery with taxonomy code 207X00000X.
