FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION
NPI 1982557385
Orthopaedic Surgery - Hand Surgery in Tarzana, CA
NPI Status: Active since February 17, 2026
Contact Information
5525 ETIWANDA AVE
TARZANA, CA
ZIP 91356
Phone: (310) 295-6317
- Organization
- Orthopaedic Surgery
- Hand Surgery
About FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION
This page provides the complete NPI Profile along with additional information for Foundation Hand Surgery Institute A Professional Corporation, a provider established in Tarzana, California operating as a Orthopaedic Surgery, focusing in hand surgery . The healthcare provider is registered in the NPI registry with number 1982557385 assigned on February 2026. The practitioner's primary taxonomy code is 207XS0106X. The provider is registered as an organization and their NPI record was last updated May 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. The authorized official of this NPI record is Dr. Purab Viswanath Md (Chief Executive Officer)
- NPI
- 1982557385
- Provider Name
- FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION
- Entity Type
- Organization
- Location Address
- 5525 ETIWANDA AVE TARZANA, CA 91356
- Location Phone
- (310) 295-6317
- Mailing Address
- 5525 ETIWANDA AVE STE 228 TARZANA, CA 91356
- Mailing Phone
- (310) 295-6317
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 02-17-2026
- Last Update Date
- 05-08-2026
- 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 Hand Surgery
- Taxonomy Code
- 207XS0106X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.
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.
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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 1982557385, 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 20 providers are registered at the same or a nearby location.
TARZANA, CA 91356
TARZANA, CA 91356
TARZANA, CA 91356
TARZANA, CA 91356
TARZANA, CA 91356
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982557385, enumerated as an "organization" on February 17, 2026.
The provider is located at 5525 ETIWANDA AVE TARZANA, CA 91356 and the phone number is (310) 295-6317.
Orthopaedic Surgery with taxonomy code 207XS0106X and a focus in Hand Surgery.
