Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Celia Sommer

Periodontics in Ventura, CA · enumerated 2017.

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

National Provider Identifier

1003339391

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Registry record

Entity type Individual (Type 1)

Name Celia Sommer

Sex Female

Practice address 1190 S Victoria Ave Ste 305, Ventura, CA, 93003

Phone (805) 644-9664

Enumeration date Jul 19, 2017

Last updated in NPPES Mar 5, 2025

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 111149 (CA) Primary

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

Is NPI 1003339391 active?

Yes, as of the latest NPPES snapshot, NPI 1003339391 is active (record last updated 2025-03-05).

How do I verify Celia Sommer's NPI record?

Cross-check NPI 1003339391 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-05.