Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Elizabeth Grimstad, ARNP

Family Nurse Practitioner in Decorah, IA · enumerated 2005.

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

National Provider Identifier

1912901364

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ann Elizabeth Grimstad

Credential ARNP

Sex Female

Practice address 901 Montgomery St, Decorah, IA, 52101

Phone (563) 382-2911

Fax (563) 387-3102

Enumeration date Jun 13, 2005

Last updated in NPPES Feb 24, 2021

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License A104292 (IA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Ann Grimstad's NPI record?

Cross-check NPI 1912901364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1912901364 active?

Yes, as of the latest NPPES snapshot, NPI 1912901364 is active (record last updated 2021-02-24).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-24.