Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr Mason Lang OD Inc

Organization Optometrist · NPI 1689333502

Dr Mason Lang OD Inc is an Optometrist in Union City, California. Works from 2 locations. Registered with an NPI since 2021.

In the registry since
2021
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

30600 Dyer St
Union City, CA 94587-1717
Phone: (510) 431-3142
Fax: (510) 324-8591
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 7150 Camino Arroyo, Gilroy, CA 95020-7351 — (408) 848-1868

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X

Record details

NPI number1689333502
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mason Lang — Owner · (510) 456-5848
Other names Open Eye Optometry
NPI enumeratedDecember 8, 2021
Last updated in NPPESJuly 12, 2025
Certification dateJuly 12, 2025
Mailing address500 Pawnee Pl, Fremont, CA 94539-3306

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