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Dr. Ruth Hsu, MD

Psychiatry Physician in Menlo Park, CA · enumerated 2015 · practices at Crossover Health Medical Group.

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

National Provider Identifier

1558757120

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Registry record

Entity type Individual (Type 1)
Name Dr. Ruth Hsu
Credential MD
Sex Female
Practice address 193 Jefferson Dr, Menlo Park, CA, 94025
Phone (650) 521-5440
Enumeration date Apr 10, 2015
Last updated in NPPES Sep 13, 2021

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License A144115 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What is the NPI number for Ruth Hsu?
The National Provider Identifier (NPI) for Ruth Hsu is 1558757120, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ruth Hsu practice?
The practice location on file with NPPES is in Menlo Park, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-13.