Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Jon Leonard Ellefson
Pharmacist in Turlock, CA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932491933
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Registry record
Entity type Individual (Type 1)
Name Mr. Jon Leonard Ellefson
Sex Male
Practice address 2955 N Tegner Rd, Turlock, CA, 95380
Phone (209) 656-5328
Fax (209) 656-5325
Enumeration date May 9, 2011
Last updated in NPPES May 9, 2011
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
Where does Jon Ellefson practice?
The practice location on file with NPPES is in Turlock, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jon Ellefson?
The National Provider Identifier (NPI) for Jon Ellefson is 1932491933, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-09.