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
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
Mailing address20911 Earl St Ste 340, Torrance, CA 90503-4354

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