Siuwai Siu, MS, RD, CNSC, CSO
NPI 1275345779 · Registered Dietitian · Arcadia, CA
Siuwai Siu, MS, RD, CNSC, CSO is a Registered Dietitian provider in Arcadia, CA (NPI 1275345779).
Provider details
- NPI number
- 1275345779
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MS, RD, CNSC, CSO
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Dietary & Nutritional Service Providers
- Oncology Nutrition Registered Dietitian133VN1301X
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 518 Diamond St Apt aMonrovia, CA 91016-8501Phone: (626) 227-3848
Registry dates
- Enumerated
- 2025-01-22
- Last updated
- 2025-02-26
- Certified
- 2025-01-27
Frequently asked questions
- What is Siuwai Siu's NPI number?
- Siuwai Siu's National Provider Identifier (NPI) is 1275345779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siuwai Siu's specialty?
- Siuwai Siu is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Siuwai Siu located?
- Siuwai Siu's practice location on file with NPPES is 411 E. Hungtington Dr.,, Arcadia, CA 91006-8501.
- What is Siuwai Siu's phone number?
- The practice phone number listed in the NPPES registry for Siuwai Siu is (626) 227-3848.
- Is Siuwai Siu's NPI active?
- Yes — Siuwai Siu's NPI (1275345779) is active in the NPPES registry as of the last update on 2025-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.