Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Antonia Gennock, MS, RD

Registered Dietitian in Fresno, CA · enumerated 2017.

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

National Provider Identifier

1255857678

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Registry record

Entity type Individual (Type 1)

Name Mrs. Antonia Gennock

Credential MS, RD

Sex Female

Practice address 2811 W California Ave, Fresno, CA, 93706

Phone (559) 493-4544

Enumeration date Aug 17, 2017

Last updated in NPPES Aug 17, 2017

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1091076 (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 Antonia Gennock?

The National Provider Identifier (NPI) for Antonia Gennock is 1255857678, a Type 1 (individual) record in the CMS NPPES registry.

Where does Antonia Gennock practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-17.