Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Miss Chi Ngoc Quang, O.D.
Optometrist in Castro Valley, CA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386871705
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Registry record
Entity type Individual (Type 1)
Name Miss Chi Ngoc Quang
Credential O.D.
Sex Female
Practice address 4041 E Castro Valley Blvd, Castro Valley, CA, 94552
Phone (510) 881-8343
Enumeration date Jun 11, 2009
Last updated in NPPES Mar 29, 2011
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 Chi Quang practice?
The practice location on file with NPPES is in Castro Valley, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Chi Quang?
The National Provider Identifier (NPI) for Chi Quang is 1386871705, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Sheri Heath Optometrist · Castro Valley, CA NPI 1871538512 Richard Sequeira Optometrist · Castro Valley, CA NPI 1194871525 Paul Peng Optometrist · Castro Valley, CA NPI 1013049840 Richard Sequeira Et Al Ptrs Optometrist · Castro Valley, CA NPI 1780890962 Castro Valley Optometry Group, Inc. Optometrist · Castro Valley, CA NPI 1073817060 Margaret Francisco Optometrist · Castro Valley, CA NPI 1801337431
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-29.