Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diana Pajongvirotjanasakul, OD
Optometrist in Anaheim, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811746035
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Registry record
Entity type Individual (Type 1)
Name Diana Pajongvirotjanasakul
Credential OD
Sex Female
Practice address 5460 E La Palma Ave, Anaheim, CA, 92807
Phone (714) 463-7250
Enumeration date May 20, 2024
Last updated in NPPES Nov 18, 2025
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Diana Pajongvirotjanasakul?
Diana Pajongvirotjanasakul is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Dawn Lam Optometrist · Anaheim, CA NPI 1720081029 Catherine Heyman Optometrist · Anaheim, CA NPI 1215030622 Julie Tyler Optometrist · Anaheim, CA NPI 1396821955 Katherine Takaki Pediatric Optometrist · Anaheim, CA NPI 1083783435 Patrick Yoshinaga Optometrist · Anaheim, CA NPI 1114071073 Marshall B. Ketchum University Optometrist · Anaheim, CA NPI 1720101876 Edeline Lu Optometrist · Anaheim, CA NPI 1720274574 Reena Patel Pediatric Optometrist · Anaheim, CA NPI 1528297173
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-18.