Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Frances V Ong, OD

Optometrist in Antioch, CA · enumerated 2007.

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

National Provider Identifier

1942344197

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Registry record

Entity type Individual (Type 1)

Name Frances V Ong

Credential OD

Sex Female

Practice address 3747 Sunset Ln, Antioch, CA, 94509

Phone (925) 754-2300

Enumeration date Feb 19, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT 12787 TPA (CA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Frances Ong?

Frances Ong is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Robert Grosserode Ophthalmology Physician · Antioch, CA NPI 1982748232 California Eye Clinic Ambulatory Surgical Clinic/Center · Antioch, CA NPI 1598809758 Ivan Hwang Ophthalmology Physician · Antioch, CA NPI 1023152378 David Huff Optometrist · Antioch, CA NPI 1558405712 California Eye Clinic Durable Medical Equipment & Medical Supplies · Antioch, CA NPI 1992840946 California Eye Clinic Ophthalmology Physician · Antioch, CA NPI 1073658027 California Eye Clinic Optometrist · Antioch, CA NPI 1598936288 Meng Lee Optometrist · Antioch, CA NPI 1538325139

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.