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Marilyn H Sy, DDS

Dentist in South San Francisco, CA · enumerated 2012.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1043586381

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Registry record

Entity type Individual (Type 1)
Name Marilyn H Sy
Credential DDS
Sex Female
Practice address South San Francisco, CA, 94080
Phone (650) 588-8848
Fax (650) 244-9284
Enumeration date Mar 30, 2012
Last updated in NPPES Oct 16, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 29184 (CA) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

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Frequently asked questions

Where does Marilyn Sy practice?
The practice location on file with NPPES is in South San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marilyn Sy?
The National Provider Identifier (NPI) for Marilyn Sy is 1043586381, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-16.