Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mu Zhang, D.O.
Optometrist in Sunnyvale, CA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871895524
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Registry record
Entity type Individual (Type 1)
Name Mu Zhang
Credential D.O.
Sex Female
Practice address 196 Barranca Ter, Sunnyvale, CA, 94086
Phone (626) 688-5616
Enumeration date Dec 1, 2010
Last updated in NPPES Jun 7, 2022
Taxonomy & licenses
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO 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
What specialty is Mu Zhang?
Mu Zhang 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.
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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-07.