Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joy Annette Mayfield, RN FNP C

Nurse Practitioner in Carthage, MO · enumerated 2006.

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

National Provider Identifier

1255403911

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Registry record

Entity type Individual (Type 1)

Name Joy Annette Mayfield

Credential RN FNP C

Sex Female

Practice address 3125 Dr Russell Smith Way, Carthage, MO, 64836

Phone (417) 358-8121

Enumeration date Nov 15, 2006

Last updated in NPPES Nov 10, 2015

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License MO016096 (MO) 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.

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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 Joy Mayfield?

Joy Mayfield is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2015-11-10.