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Ray Hsiao MD Inc

Internal Medicine Physician in Hacienda Heights, CA · enumerated 2006 · authorized official Ray Hsaio, President.

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

National Provider Identifier

1710062401

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Registry record

Entity type Organization (Type 2)
Legal business name Ray Hsiao MD Inc
Practice address 1850 S Azusa Ave, Suite 308, Hacienda Heights, CA, 91745
Phone (626) 854-7866
Fax (626) 820-0666
Enumeration date Oct 25, 2006
Last updated in NPPES Sep 30, 2011

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G70571 (CA) Primary

Authorized official

Name Ray Hsaio
Title President
Phone (626) 854-7866

Other identifiers

Identifier Type State Issuer
00G705711 Medicaid CA -

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-09-30. Verify at npiregistry.cms.hhs.gov.
Where is Ray Hsiao MD Inc located?
The practice location on file with NPPES is in Hacienda Heights, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-30.