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

Siuwai Elaine SIU, MS, RD, CNSC, CSO

Individual provider Oncology Nutrition Registered Dietitian · NPI 1275345779

Siuwai Elaine SIU, MS, RD, CNSC, CSO is an Oncology Nutrition Registered Dietitian in Arcadia, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2025
Specialties on file
2
What do these letters mean?
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.

See every abbreviation used in this directory →

Practice location Address checks out

411 E Hungtington Dr Ste 107 #1209
Arcadia, CA 91006-8501
Phone: (626) 227-3848
Show map & directions

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

Additional practice locations (1)

  • 518 Diamond St Apt A, Monrovia, CA 91016-8501 — (626) 227-3848

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 968867 (CA)
Oncology Nutrition Registered Dietitian Taxonomy 133VN1301X

Record details

NPI number1275345779
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RD , CNSC , CSO
Sole proprietorYes
NPI enumeratedJanuary 22, 2025
Last updated in NPPESFebruary 26, 2025
Certification dateJanuary 27, 2025