Foundation Hand Surgery Institute a Professional Corporation

Primary specialty

Orthopaedic Hand Surgery PhysicianTaxonomy code 207XS0106X

Legal business name

FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION

Practice address

5525 Etiwanda Ave Ste 228
Tarzana, CA 91356-6157

Phone

(310) 295-6317

NPI assigned

Feb 17, 2026

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Dr. Purab Viswanath, MDNPI 1336374958

Title

Chief Executive Officer

Phone

(440) 453-5944

Specialties & licenses 1

Addresses

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Purab Chawla Viswanath, MD

  • Orthopaedic Hand Surgery Physician
  • Tarzana, CA
  • NPI 1336374958
  NPD (past) Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1771286400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1789084800000",
    "number": "1982557385",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5525 ETIWANDA AVE STE 228",
            "city": "TARZANA",
            "state": "CA",
            "postal_code": "913566157",
            "telephone_number": "310-295-6317"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5525 ETIWANDA AVE STE 228",
            "city": "TARZANA",
            "state": "CA",
            "postal_code": "913566157",
            "telephone_number": "310-295-6317"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "23310 Cinema Dr Ste 104",
            "address_purpose": "LOCATION",
            "city": "Valencia",
            "state": "CA",
            "postal_code": "913551613",
            "country_code": "US",
            "telephone_number": "818-578-3152",
            "fax_number": "818-578-3153",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1612 W Burbank Blvd",
            "address_purpose": "LOCATION",
            "city": "Burbank",
            "state": "CA",
            "postal_code": "915061311",
            "country_code": "US",
            "telephone_number": "818-578-3152",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "FOUNDATION HAND SURGERY INSTITUTE A PROFESSIONAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-02-17",
        "last_updated": "2026-09-11",
        "certification_date": "2026-09-11",
        "status": "A",
        "authorized_official_last_name": "VISWANATH",
        "authorized_official_first_name": "PURAB",
        "authorized_official_title_or_position": "CHIEF EXECUTIVE OFFICER",
        "authorized_official_telephone_number": "440-453-5944",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207XS0106X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Orthopaedic Surgery, Hand Surgery",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Orthopaedic Hand Surgery Physician in Tarzana, CA
• Providers in Tarzana, CA by specialty
• Orthopaedic Hand Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.