Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mariruth Neff, FNP

Family Nurse Practitioner in Green Bay, WI · enumerated 2007 · practices at St Vincent Hospital-Hospital Sisters-Third Order of St Francis.

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

National Provider Identifier

1013197979

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Registry record

Entity type Individual (Type 1)

Name Mariruth Neff

Credential FNP

Sex Female

Practice address 2793 Lineville Rd, Green Bay, WI, 54313

Phone (920) 496-4700

Enumeration date Nov 8, 2007

Last updated in NPPES Oct 26, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 3254-33 (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
1467583278	Other	WI	OMC NPI
390848401050	Other	WI	CMH ANTHEM
11014110	Medicaid	WI	-
101863-030	Other	WI	RN LIC
1851477913	Other	WI	CMH NPI
36053600	Medicaid	WI	-

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 1013197979 active?

Yes, as of the latest NPPES snapshot, NPI 1013197979 is active (record last updated 2020-10-26).

How do I verify Mariruth Neff's NPI record?

Cross-check NPI 1013197979 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 2020-10-26.