Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Nancy Marie Hays, R.D., L.D.

Registered Dietitian in Hannibal, MO · enumerated 2006.

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

National Provider Identifier

1437249935

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Registry record

Entity type Individual (Type 1)

Name Mrs. Nancy Marie Hays

Credential R.D., L.D.

Sex Female

Practice address 6000 Hospital Drive, Hannibal, MO, 63401

Phone (573) 248-5370

Enumeration date Oct 13, 2006

Last updated in NPPES Mar 27, 2023

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2001008693 (MO) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

Other identifiers

Identifier	Type	State	Issuer
HA 355915208	Medicaid	MO	-

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Nancy Hays?

Nancy Hays is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-27.