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

Shirley Liu Underwood, DO

Individual provider Internal Medicine Physician · NPI 1497919872

Shirley Liu Underwood, DO is an Internal Medicine Physician in Oxnard, California. Practices as a sole proprietor. Licensed in Arizona and California.

Licensed in
AZ, CA
In the registry since
2008
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2000 Outlet Center Dr Ste 110
Oxnard, CA 93036-0607
Phone: (805) 604-4588
Fax: (805) 604-7469
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 20A11781 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 20A11781 (CA)
Pediatrics Physician Taxonomy 208000000X · Licence R70090 (AZ)

Record details

NPI number1497919872
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedJuly 15, 2008
Last updated in NPPESOctober 18, 2023
Certification dateOctober 18, 2023

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