Individual provider · Type 1 NPI

John Christian Ong, DO

Nephrology Physician · Fountain Valley, CA

NPI number 1477056406 Active

Practice location

11100 Warner Ave Ste 218
Fountain Valley, CA 92708-7511

Call (714) 641-9696 Map

Fax (714) 641-1211

Mailing address

9373 Hazard Way Ste 200
San Diego, CA 92123-1226

Other practice locations

  • 3100 N Tenaya Way, Las Vegas, NV 89128-0436 · (702) 824-7687

Specialties and licenses

TaxonomyCodeLicense
Nephrology Physician Primary 207RN0300X20A21125 (CA)

Nephrology Physician: An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

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About NPI 1477056406

John Christian Ong, DO's National Provider Identifier is 1477056406, issued on Mar 15, 2018. The primary taxonomy on file is Nephrology Physician (207RN0300X), and the practice location is in Fountain Valley, CA. The record was last updated on Jan 16, 2026.