Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Floyd Wayne Elftman, FNP

Family Nurse Practitioner in Greenfield, WI · enumerated 2007.

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

National Provider Identifier

1275656597

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Registry record

Entity type Individual (Type 1)

Name Floyd Wayne Elftman

Credential FNP

Sex Male

Practice address 4131 W Loomis Rd, Suite 300, Greenfield, WI, 53221

Phone (414) 325-7246

Fax (414) 325-3770

Enumeration date Apr 10, 2007

Last updated in NPPES Nov 21, 2014

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1697-033 (WI) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
1697-033	Other	WI	WISCONSIN LINCENSE

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

Where does Floyd Elftman practice?

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

What is the NPI number for Floyd Elftman?

The National Provider Identifier (NPI) for Floyd Elftman is 1275656597, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-21.