JOHN W WITCZAK DO
NPI 1811913825
Orthopaedic Surgery in Mission Viejo, CA
NPI Status: Active since July 14, 2006
Contact Information
26921 CROWN VALLEY PKWY
STE 201
MISSION VIEJO, CA
ZIP 92691
Phone: (949) 348-2250
Fax: (949) 348-8904
- Individual
- Male
- Orthopaedic Surgery
About JOHN WITCZAK
This page provides the complete NPI Profile along with additional information for John Witczak, a provider established in Mission Viejo, California with a medical specialization in Orthopaedic Surgery. The healthcare provider is registered in the NPI registry with number 1811913825 assigned on July 2006. The practitioner's primary taxonomy code is 207X00000X with license number 20A4682 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1811913825
- Provider Name
- JOHN W WITCZAK DO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 26921 CROWN VALLEY PKWY STE 201 MISSION VIEJO, CA 92691
- Location Phone
- (949) 348-2250
- Location Fax
- (949) 348-8904
- Mailing Address
- 26921 CROWN VALLEY PKWY STE 201 MISSION VIEJO, CA 92691
- Mailing Phone
- (949) 348-2250
- Mailing Fax
- (949) 348-8904
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-14-2006
- Last Update Date
- 07-08-2007
- 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.
- 20A4682
- License State
- CA
- 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.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| C90912 | MEDICARE UPIN (02) | ||
| W20A4682A | MEDICARE ID-TYPE UNSPECIFIED (04) |
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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 1811913825, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 17 providers are registered at the same or a nearby location.
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811913825, enumerated as an "individual" on July 14, 2006.
The provider is located at 26921 CROWN VALLEY PKWY STE 201 MISSION VIEJO, CA 92691 and the phone number is (949) 348-2250.
Orthopaedic Surgery with taxonomy code 207X00000X.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
