GERARD JOSEPH BERNAL SIM OD
NPI 1669363883
Optometrist in Grand Terrace, CA

Q: What is Gerard Joseph Sim's NPI number?

The NPI number for Gerard Joseph Sim is 1669363883. It was assigned to this individual provider in the NPPES registry on July 15, 2025.

Q: What is Gerard Joseph Sim's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Gerard Joseph Sim was last updated on July 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 15, 2025

11980 MOUNT VERNON AVE, GRAND TERRACE, CA 92313(951) 654-0803 Get Directions Write a Review

NPPES record last updated: July 22, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Gerard Joseph Bernal Sim Od NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GERARD JOSEPH BERNAL SIM OD (NPI 1669363883) is an individual optometrist in Grand Terrace, California, licensed in California (OPT36072-TLG) and active in the NPI registry since July 2025.

NPPES Registry Identity

NPI1669363883

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameGERARD JOSEPH BERNAL SIMCredential: OD

Location Address11980 MOUNT VERNON AVEGrand Terrace, CA 92313-5172

Mailing Address786 Newbury WayDiamond Bar, CA 91765-4625

Phone(951) 654-0803

Sole ProprietorNo

Enumeration DateJuly 15, 2025

Last NPPES UpdateJuly 22, 2025

NPPES CertifiedJuly 22, 2025

✔ NPI 1669363883 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in CA · OPT36072-TLG

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

11980 MOUNT VERNON AVE, Grand Terrace, CA 92313

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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