Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lina Chan, OD
Optometrist in Walnut Creek, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659358042
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Lina Chan
Credential OD
Sex Female
Practice address 122 La Casa Via, #222, Walnut Creek, CA, 94598
Phone (925) 947-0888
Fax (925) 947-4385
Enumeration date Dec 27, 2005
Last updated in NPPES Jan 7, 2020
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| SD0111080 | Medicaid | CA | - |
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
What is the NPI number for Lina Chan?
The National Provider Identifier (NPI) for Lina Chan is 1659358042, a Type 1 (individual) record in the CMS NPPES registry.
Where does Lina Chan practice?
The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → David Demartini Ophthalmology Physician · Walnut Creek, CA NPI 1437134855 Allen Verne Ophthalmology Physician · Walnut Creek, CA NPI 1093749491 Northern California Cornea Associates Inc Ophthalmology Physician · Walnut Creek, CA NPI 1992889240 Pacific Retina Ophthalmology Physician · Walnut Creek, CA NPI 1306293964
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-07.