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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Steven Huy Ong, MD

Nephrology Physician in Fairfield, CA · enumerated 2006 · practices at Ong Rubin Shahmir A Medical Corporation.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1225006349

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Registry record

Entity type Individual (Type 1)
Name Mr. Steven Huy Ong
Credential MD
Sex Male
Practice address 1411 Oliver Rd Ste 250, Fairfield, CA, 94534
Phone (707) 426-5407
Fax (707) 426-6376
Enumeration date Mar 14, 2006
Last updated in NPPES Nov 12, 2024

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License A90786 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1225006349 active?
Yes, as of the latest NPPES snapshot, NPI 1225006349 is active (record last updated 2024-11-12).
How do I verify Steven Ong's NPI record?
Cross-check NPI 1225006349 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-12.