Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dan Fenyvesi, RD

Registered Dietitian in Oakland, CA · enumerated 2008.

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

National Provider Identifier

1922275940

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Registry record

Entity type Individual (Type 1)

Name Dan Fenyvesi

Credential RD

Sex Male

Practice address 3451 E 12th St, Oakland, CA, 94601

Phone (510) 535-4000

Enumeration date May 8, 2008

Last updated in NPPES May 8, 2008

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1004833 (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

How do I verify Dan Fenyvesi's NPI record?

Cross-check NPI 1922275940 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1922275940 active?

Yes, as of the latest NPPES snapshot, NPI 1922275940 is active (record last updated 2008-05-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-08.