Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Steven G Kiefer, C.O.
Specialist in Temecula, CA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1922239979
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Registry record
Entity type Individual (Type 1)
Name Mr. Steven G Kiefer
Credential C.O.
Sex Male
Practice address 41707 Winchester Rd, Suite 102, Temecula, CA, 92590
Phone (951) 296-1894
Fax (951) 296-1896
Enumeration date Aug 6, 2009
Last updated in NPPES Aug 6, 2009
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1922239979 active?
Yes, as of the latest NPPES snapshot, NPI 1922239979 is active (record last updated 2009-08-06).
How do I verify Steven Kiefer's NPI record?
Cross-check NPI 1922239979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-06.