Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carlynn Y Sze, MS, RD

Dietary Manager in Oakland, CA · enumerated 2018.

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

National Provider Identifier

1265922199

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Registry record

Entity type Individual (Type 1)

Name Carlynn Y Sze

Credential MS, RD

Sex Female

Practice address 3600 Broadway, Oakland, CA, 94611

Phone (510) 752-1000

Enumeration date May 16, 2018

Last updated in NPPES May 16, 2018

Taxonomy & licenses

132700000X Dietary Manager Dietary & Nutritional Service Providers · License 881203 (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

Is NPI 1265922199 active?

Yes, as of the latest NPPES snapshot, NPI 1265922199 is active (record last updated 2018-05-16).

How do I verify Carlynn Sze's NPI record?

Cross-check NPI 1265922199 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-16.