Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

O.William Arana D.D.S.,M.S. Inc

Q: What is the NPI number for O.William Arana D.D.S.,M.S. Inc?

The NPI for O.William Arana D.D.S.,M.S. Inc is 1265630339, a Type 2 (organization) record in the CMS NPPES registry.

Orthodontics and Dentofacial Orthopedics Dentistry in Pomona, CA · enumerated 2007 · authorized official Octavio Arana, President.

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

National Provider Identifier

1265630339

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Registry record

Entity type Organization (Type 2)

Legal business name O.William Arana D.D.S.,M.S. Inc

Practice address 1377 N Garey Ave, Pomona, CA, 91767

Phone (909) 620-1340

Enumeration date Jul 10, 2007

Last updated in NPPES Jul 10, 2007

Taxonomy & classification

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 24942 (CA) Primary

Authorized official

Name Octavio Arana

Title President

Phone (909) 620-1340

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

Who is the authorized official for O.William Arana D.D.S.,M.S. Inc?

NPPES lists Octavio Arana (President) as the authorized official for this organization.

What is the NPI number for O.William Arana D.D.S.,M.S. Inc?

The NPI for O.William Arana D.D.S.,M.S. Inc is 1265630339, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-10.