Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Glenda Mazzarri

Nutrition Education Nutritionist in Oklahoma City, OK · enumerated 2017.

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

National Provider Identifier

1659817856

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Registry record

Entity type Individual (Type 1)

Name Glenda Mazzarri

Sex Female

Practice address 12500 S Western Ave Apt 167, Oklahoma City, OK, 73170

Phone (405) 326-1295

Enumeration date Jan 11, 2017

Last updated in NPPES Jan 11, 2017

Taxonomy & licenses

133NN1002X Nutrition Education Nutritionist Dietary & Nutritional Service Providers Primary

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 Glenda Mazzarri's NPI record?

Cross-check NPI 1659817856 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659817856 active?

Yes, as of the latest NPPES snapshot, NPI 1659817856 is active (record last updated 2017-01-11).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-11.