Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Marcy J Gregg, ARNP

Family Nurse Practitioner in Mount Ayr, IA · enumerated 2007.

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

National Provider Identifier

1861542490

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Registry record

Entity type Individual (Type 1)

Name Mrs. Marcy J Gregg

Credential ARNP

Sex Female

Practice address 504 N. Cleveland St., Mount Ayr, IA, 50854

Phone (641) 464-3226

Fax (641) 464-4420

Enumeration date Jan 12, 2007

Last updated in NPPES Nov 23, 2009

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License A073758 (IA) Primary

Other identifiers

Identifier	Type	State	Issuer
0219451	Medicaid	IA	-
06878	Other	IA	BLUE CROSS
500013821	Medicaid	IA	-
42510703	Medicaid	MO	-
IA0112	Other	IA	JOHN DEERE
13590	Other	IA	MIDLAND CHOICE

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

How do I verify Marcy Gregg's NPI record?

Cross-check NPI 1861542490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861542490 active?

Yes, as of the latest NPPES snapshot, NPI 1861542490 is active (record last updated 2009-11-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-23.