Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Helen Ma, OD
Optometrist in Palo Alto, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1073689154
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Registry record
Entity type Individual (Type 1)
Name Helen Ma
Credential OD
Sex Female
Practice address 795 El Camino Real, Palo Alto, CA, 94301
Phone (650) 853-2974
Enumeration date Nov 28, 2006
Last updated in NPPES Mar 4, 2020
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
How do I verify Helen Ma's NPI record?
Cross-check NPI 1073689154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1073689154 active?
Yes, as of the latest NPPES snapshot, NPI 1073689154 is active (record last updated 2020-03-04).
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-04.