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

Catherine S Mao, MD

Individual provider Pediatric Endocrinology Physician · NPI 1073567236

Catherine S Mao, MD is a Pediatric Endocrinology Physician in Torrance, California. Works from 2 locations. 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.

See every abbreviation used in this directory →

Practice location Address checks out

21840 Normandie Ave Ste 1100
Torrance, CA 90502-2047
Phone: (310) 222-5133
Fax: (310) 781-9352
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 W Carson St, Torrance, CA 90502-2004 — (310) 222-5189

Specialties & licences

Pediatric Endocrinology Physician (primary) Taxonomy 2080P0205X · Licence A51970 (CA)

Record details

NPI number1073567236
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 20, 2006
Last updated in NPPESJuly 23, 2019

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