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Edit this profileJohn C. Ong, DO practices nephrology in Fountain Valley, CA. The provider's National Provider Identifier (NPI) is 1477056406.
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.
11100 WARNER AVE STE 218
Fountain Valley, CA 92708
3100 N Tenaya Way
Las Vegas, NV 89128
Dr. Ong is a kidney specialist in Fountain Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nephrology”.
NPI registry
Dr. Ong is listed at 11100 Warner Ave Ste 218, Fountain Valley, CA 92708. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (714) 641-9696. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Ong's National Provider Identifier is 1477056406. 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. Ong attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
Dr. Ong has 6 years experience. Calculated from a graduation year of 2020, 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. Ong. If this is you, claiming it is free.
Guide.md
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