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

John M Tsao Inc

Organization Endocrinology, Diabetes & Metabolism Physician · NPI 1265530323

John M Tsao Inc is an Endocrinology, Diabetes & Metabolism Physician in Torrance, 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

20911 Earl St Ste 340
Torrance, CA 90503-4355
Phone: (310) 542-6333
Fax: (310) 542-4695
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence C23235 (CA)

Record details

NPI number1265530323
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Celina Hack — President · (310) 792-3914
NPI enumeratedSeptember 20, 2006
Last updated in NPPESJuly 24, 2012
Mailing address20911 Earl St Ste 340, Torrance, CA 90503-4355

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