Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Oscar E Valenzuela DDS and Philip R Melnick Dmd, Inc.

Periodontics in Cerritos, CA · enumerated 2007 · authorized official Oscar Valenzuela, President.

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

National Provider Identifier

1104042100

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Registry record

Entity type Organization (Type 2)

Legal business name Oscar E Valenzuela DDS and Philip R Melnick Dmd, Inc.

Practice address 18000 Studebaker Rd, Suite 365, Cerritos, CA, 90703

Phone (562) 860-1611

Fax (562) 865-2245

Enumeration date Apr 18, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223P0300X Periodontics Dental Providers · License 27392 (CA) Primary

Authorized official

Name Oscar Valenzuela

Title President

Phone (562) 860-1611

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 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.

What type of organization is Oscar E Valenzuela DDS and Philip R Melnick Dmd, Inc.?

Oscar E Valenzuela DDS and Philip R Melnick Dmd, Inc. is registered in NPPES as a Periodontics (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.