Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Williams, RD/LD

Registered Dietitian in Norman, OK · enumerated 2020.

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

National Provider Identifier

1699394601

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Registry record

Entity type Individual (Type 1)

Name Alyssa Williams

Credential RD/LD

Sex Female

Practice address 909 26th Ave Nw, Norman, OK, 73069

Phone (405) 801-2323

Enumeration date Apr 9, 2020

Last updated in NPPES Dec 4, 2020

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2009 (AR) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2205 (OK) 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 1699394601 active?

Yes, as of the latest NPPES snapshot, NPI 1699394601 is active (record last updated 2020-12-04).

How do I verify Alyssa Williams's NPI record?

Cross-check NPI 1699394601 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 2020-12-04.