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Dr. Marie De La Paz Sum, PSY.D.

Clinical Child & Adolescent Psychologist in Pleasanton, CA · enumerated 2006.

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

National Provider Identifier

1396804399

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Registry record

Entity type Individual (Type 1)
Name Dr. Marie De La Paz Sum
Credential PSY.D.
Sex Female
Practice address 3825 Hopyard Rd, Suite 140, Pleasanton, CA, 94588
Phone (925) 847-5102
Fax (925) 847-5593
Enumeration date Dec 6, 2006
Last updated in NPPES Jan 14, 2022

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License PSY20000 (CA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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 Marie Sum practice?
The practice location on file with NPPES is in Pleasanton, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marie Sum?
The National Provider Identifier (NPI) for Marie Sum is 1396804399, 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 2022-01-14.