Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Shirley S Siu, RD

Q: What is the NPI number for Shirley Siu?

The National Provider Identifier (NPI) for Shirley Siu is 1386728582, a Type 1 (individual) record in the CMS NPPES registry.

Registered Dietitian in San Francisco, CA · enumerated 2006.

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

National Provider Identifier

1386728582

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Registry record

Entity type Individual (Type 1)

Name Shirley S Siu

Credential RD

Sex Female

Practice address 900 Hyde St, San Francisco, CA, 94109

Phone (415) 353-6447

Enumeration date Oct 24, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 963371 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Shirley Siu?

The National Provider Identifier (NPI) for Shirley Siu is 1386728582, a Type 1 (individual) record in the CMS NPPES registry.

Where does Shirley Siu practice?

The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.