Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Diane Tatjana Cosko, DVM
Veterinarian in Lebec, CA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225383045
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Registry record
Entity type Individual (Type 1)
Name Dr. Diane Tatjana Cosko
Credential DVM
Sex Female
Practice address 837 Lebec Rd., Lebec, CA, 93243
Phone (661) 248-7387
Fax (661) 248-7023
Enumeration date Jul 18, 2012
Last updated in NPPES Jul 18, 2012
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 Diane Cosko practice?
The practice location on file with NPPES is in Lebec, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Cosko?
The National Provider Identifier (NPI) for Diane Cosko is 1225383045, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-18.