Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen C Lin, O.D.
Optometrist in Irvine, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831241801
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Registry record
Entity type Individual (Type 1)
Name Karen C Lin
Credential O.D.
Sex Female
Practice address 850 Health Sciences Rd, Irvine, CA, 92617
Phone (949) 824-2020
Enumeration date Jan 18, 2007
Last updated in NPPES Dec 22, 2023
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
Where does Karen Lin practice?
The practice location on file with NPPES is in Irvine, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Lin?
The National Provider Identifier (NPI) for Karen Lin is 1831241801, 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 2023-12-22.