Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marcus Leung, OD
Optometrist in Clifton, NJ · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639802036
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Registry record
Entity type Individual (Type 1)
Name Dr. Marcus Leung
Credential OD
Sex Male
Practice address 30 Kingsland Rd, Clifton, NJ, 07014
Phone (917) 750-2065
Enumeration date Jul 5, 2022
Last updated in NPPES Jul 5, 2022
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 Marcus Leung?
The National Provider Identifier (NPI) for Marcus Leung is 1639802036, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marcus Leung practice?
The practice location on file with NPPES is in Clifton, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-05.