Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Somaia Gamal Nassef, O.D.
Optometrist in Antioch, CA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578016457
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Registry record
Entity type Individual (Type 1)
Name Somaia Gamal Nassef
Credential O.D.
Sex Female
Practice address 4893 Lone Tree Way, Antioch, CA, 94531
Phone (925) 978-0296
Enumeration date Jul 27, 2016
Last updated in NPPES Mar 17, 2018
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 NPI 1578016457 active?
Yes, as of the latest NPPES snapshot, NPI 1578016457 is active (record last updated 2018-03-17).
How do I verify Somaia Nassef's NPI record?
Cross-check NPI 1578016457 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.