Provider Profile
Based in Ontario, CA, Nasiem A. Umberg, OD is listed in the NPI registry under optometry. Nasiem is also listed as specializing in optometrist. NPI 1578124715 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
3155 SEDONA CT STE 100
Ontario, CA 91764
13197 Central Ave Ste 101
Chino, CA 91710
Dr. Umberg is an optometry in Ontario, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Umberg is listed at 3155 Sedona CT Ste 100, Ontario, CA 91764. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (096) 989-7809. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Umberg's National Provider Identifier is 1578124715. 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
Dr. Umberg attended Other, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
Dr. Umberg has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Umberg. If this is you, claiming it is free.
Guide.md
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