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Edit this profileAt a glance
- 30600 Dyer St, Union City, CA 94587
About Dr. Lang
Based in Union City, CA, Mason Lang, OD is listed in the NPI registry under optometry. Mason is also listed as specializing in optometrist. NPI 1407337439 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 431-3142
- Email not available
Practice Locations
30600 DYER ST
Union City, CA 94587
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometry specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other optometry specialists in Union City 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Lang?
Dr. Lang is an optometry in Union City, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Lang's address?
Dr. Lang is listed at 30600 Dyer St, Union City, CA 94587. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Lang?
The number on file is (510) 431-3142. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Lang?
Dr. Lang's National Provider Identifier is 1407337439. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lang train?
Dr. Lang attended Other, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lang have?
Dr. Lang has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
Is Dr. Lang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lang. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.