Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen Tsui, RD
Registered Dietitian in Fremont, CA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174964498
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Registry record
Entity type Individual (Type 1)
Name Karen Tsui
Credential RD
Sex Female
Practice address 1860 Mowry Ave Ste 402, Fremont, CA, 94538
Phone (510) 713-0700
Enumeration date Jul 15, 2013
Last updated in NPPES Jul 15, 2013
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1041778 (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.
Frequently asked questions
What is the NPI number for Karen Tsui?
The National Provider Identifier (NPI) for Karen Tsui is 1174964498, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Tsui practice?
The practice location on file with NPPES is in Fremont, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-15.