Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leslie Wai-Hill Hung, O.D.

Optometrist in Mission Viejo, CA · enumerated 2007.

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

National Provider Identifier

1619020146

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Registry record

Entity type Individual (Type 1)

Name Leslie Wai-Hill Hung

Credential O.D.

Sex Female

Practice address 30 the Shops at Mission Viejo, Mission Viejo, CA, 92691

Phone (949) 364-4010

Fax (949) 364-4001

Enumeration date Jan 19, 2007

Last updated in NPPES Sep 16, 2010

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 13151T (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Leslie Hung?

Leslie Hung 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-16.