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

Dr. John M Tsao Sr., MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1194736082

Dr. John M Tsao Sr., MD is an Endocrinology, Diabetes & Metabolism Physician in Torrance, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20911 Earl St Ste 340
Torrance, CA 90503-4354 Not confirmed with CMS for 13 years — call before visiting
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 number1194736082
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 10, 2006
Last updated in NPPESAugust 2, 2013

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