Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ray Hsiao MD Inc

Organization Internal Medicine Physician · NPI 1710062401

Ray Hsiao MD Inc is an Internal Medicine Physician in Hacienda Heights, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1850 S Azusa Ave Ste 308
Hacienda Heights, CA 91745-6813
Phone: (626) 854-7866
Fax: (626) 820-0666
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G70571 (CA)

Record details

NPI number1710062401
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Ray Hsaio — President · (626) 854-7866
NPI enumeratedOctober 25, 2006
Last updated in NPPESSeptember 30, 2011
Mailing address1850 S Azusa Ave, Suite 308, Hacienda Heights, CA 91745-6813

Other providers in Hacienda Heights