NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Petros K. Frousiakis, D.O., A Professional Corporation

Sports Medicine (Orthopaedic Surgery) Physician in Ventura, CA · enumerated 2019 · authorized official Marisol Schaniel, Office Manager.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1659838373

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Petros K. Frousiakis, D.O., A Professional Corporation
Practice address 168 N Brent St Ste 302, Ventura, CA, 93003
Phone (805) 948-6373
Fax (805) 948-1470
Enumeration date Feb 28, 2019
Last updated in NPPES Jun 17, 2025

Taxonomy & classification

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Marisol Schaniel
Title Office Manager
Phone (805) 948-6348

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Petros K. Frousiakis, D.O., A Professional Corporation?
Petros K. Frousiakis, D.O., A Professional Corporation is registered in NPPES as a Sports Medicine (Orthopaedic Surgery) Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-17.