Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lawrence Wei Tseng, OD
Optometrist in Fontana, CA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1679071930
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Registry record
Entity type Individual (Type 1)
Name Lawrence Wei Tseng
Credential OD
Sex Male
Practice address 17264 Foothill Blvd Ste E, Fontana, CA, 92335
Phone (909) 355-8883
Enumeration date Jan 31, 2018
Last updated in NPPES Jan 31, 2018
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Lawrence Tseng?
The National Provider Identifier (NPI) for Lawrence Tseng is 1679071930, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lawrence Tseng practice?
The practice location on file with NPPES is in Fontana, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-31.