Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Efrain Mascareno Od Apc

Optometrist in Chula Vista, CA · enumerated 2006 · authorized official Efrain Mascareno, President.

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

National Provider Identifier

1073687851

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Registry record

Entity type Organization (Type 2)

Legal business name Efrain Mascareno Od Apc

Other name <Unavail>

Practice address 440 4th Ave, Chula Vista, CA, 91910

Phone (619) 427-2020

Fax (866) 254-5707

Enumeration date Nov 20, 2006

Last updated in NPPES Apr 17, 2013

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 10906T (CA) Primary

Authorized official

Name Efrain Mascareno

Title President

Phone (619) 427-2020

Other identifiers

Identifier	Type	State	Issuer
SD0109061	Medicaid	CA	-

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-04-17. Verify at npiregistry.cms.hhs.gov.

Where is Efrain Mascareno Od Apc located?

The practice location on file with NPPES is in Chula Vista, CA.

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Efrain Mascareno Optometrist · Chula Vista, CA NPI 1457507279

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-17.