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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION
NPI 1982557385
Orthopaedic Surgery - Hand Surgery in Tarzana, CA

Active since February 17, 2026
5525 ETIWANDA AVE STE 228, TARZANA, CA 91356(310) 295-6317 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 13, 2026, Sep 11, 2026, Aug 18, 2026 and 1 more (4 updates tracked since 2026).

About Foundation Hand Surgery Institute A Professional Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION (NPI 1982557385) is a healthcare organization registered as a hand surgery in Tarzana, California and active in the NPI registry since February 2026. The organization maintains 4 additional practice locations and lists Purab Viswanath, Chief Executive Officer, as its authorized official.

NPPES Registry Identity

NPI1982557385
Entity TypeOrganization
Primary Taxonomy207XS0106X
Legal Business NameFOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION
Location Address5525 ETIWANDA AVE STE 228Tarzana, CA 91356-6157
Mailing Address5525 Etiwanda Ave Ste 228Tarzana, CA 91356-6157 · (310) 295-6317
Phone(310) 295-6317
Organization SubpartNo
Authorized OfficialPurab ViswanathChief Executive Officer · (440) 453-5944
Enumeration DateFebruary 17, 2026
Last NPPES UpdateOctober 13, 20264 updates tracked since enumeration
NPPES CertifiedOctober 13, 2026
✔ NPI 1982557385 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Hand SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XS0106X
Definition
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.
5525 ETIWANDA AVE STE 228, Tarzana, CA 91356
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Secondary Practice Locations 4

Location 111401 Valley Blvd Ste 103El Monte, CA 91731-3252 · Phone (818) 578-3152
Location 21612 W Burbank BlvdBurbank, CA 91506-1311 · Phone (818) 578-3152
Location 323310 Cinema Dr Ste 104Valencia, CA 91355-1613 · Phone (818) 578-3152 · Fax (818) 578-3153
Location 42750 Sycamore Dr Ste 200Simi Valley, CA 93065-1500 · Phone (818) 578-3152

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Foundation Hand Surgery Institute A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Foundation Hand Surgery Institute A Professional Corporation, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Purab Viswanath, MD
Orthopedic Surgery
NPI 1336374958
5525 ETIWANDA AVE STE 228
Tarzana, CA 91356
(310) 295-6317
✔ PECOS✔ Accepts MedicareSame address
Ryan Tantone, MD
Orthopedic Surgery
NPI 1316407505
5525 ETIWANDA AVE STE 228
Tarzana, CA 91356
(310) 295-6317
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Foundation Hand Surgery Institute A Professional Corporation's NPI number?

The NPI number for Foundation Hand Surgery Institute A Professional Corporation is 1982557385. It was assigned to this organization in the NPPES registry on February 17, 2026.

Where is Foundation Hand Surgery Institute A Professional Corporation located?

Foundation Hand Surgery Institute A Professional Corporation is located at 5525 Etiwanda Ave Ste 228, Tarzana, CA 91356. The listed phone number is (310) 295-6317.

What is Foundation Hand Surgery Institute A Professional Corporation's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Hand Surgery, with taxonomy code 207XS0106X.

Is Foundation Hand Surgery Institute A Professional Corporation enrolled in Medicare?

Yes. Foundation Hand Surgery Institute A Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Foundation Hand Surgery Institute A Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Orthopedic Surgery, reassign their Medicare billing to Foundation Hand Surgery Institute A Professional Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Foundation Hand Surgery Institute A Professional Corporation was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.