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Ms. Cecillia Y Sun, R.D.

Renal Nutrition Registered Dietitian in Fremont, CA · enumerated 2010.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609192335

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Registry record

Entity type Individual (Type 1)
Name Ms. Cecillia Y Sun
Credential R.D.
Sex Female
Practice address 39233 Liberty St, Fremont, CA, 94538
Phone (510) 795-8186
Fax (510) 792-8186
Enumeration date Apr 20, 2010
Last updated in NPPES Jul 29, 2010

Taxonomy & licenses

133VN1005X Renal Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 16530 (CA) Primary
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Cecillia Sun?
Cecillia Sun is registered in NPPES with the primary taxonomy of Renal Nutrition Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-29.