Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Catherine Joo, OD
Optometrist in San Antonio, TX · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528259595
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Registry record
Entity type Individual (Type 1)
Name Catherine Joo
Credential OD
Sex Female
Practice address 11103 West Ave, 6, San Antonio, TX, 78213
Phone (210) 524-6509
Fax (210) 524-6587
Enumeration date Aug 6, 2007
Last updated in NPPES Aug 6, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
Is NPI 1528259595 active?
Yes, as of the latest NPPES snapshot, NPI 1528259595 is active (record last updated 2007-08-06).
How do I verify Catherine Joo's NPI record?
Cross-check NPI 1528259595 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 2007-08-06.