DR. MASON LANG OD
NPI 1407337439
Optometrist in Union City, CA
About Dr. Mason Lang Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MASON LANG OD (NPI 1407337439) is an individual optometrist in Union City, California, licensed in California (34493) and active in the NPI registry since August 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Mason Lang Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94587 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mason Lang's NPI number?
The NPI number for Mason Lang is 1407337439. It was assigned to this individual provider in the NPPES registry on August 27, 2018.
Where is Mason Lang located?
Mason Lang practices at 30600 Dyer St, Union City, CA 94587. The listed phone number is (510) 431-3142.
What is Mason Lang's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Mason Lang enrolled in Medicare?
Yes. Mason Lang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Mason Lang was last updated on July 12, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
