Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Grieves, CRNA, DNAP

Certified Registered Nurse Anesthetist in West Burlington, IA · enumerated 2005.

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

National Provider Identifier

1245229640

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Grieves

Credential CRNA, DNAP

Sex Male

Practice address 1221 S Gear Ave, West Burlington, IA, 52655

Phone (319) 768-3030

Enumeration date Oct 18, 2005

Last updated in NPPES Mar 8, 2016

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 100838 (NE) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License COA.11621-NA (OH) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License D140600 (IA) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

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 Mark Grieves's NPI record?

Cross-check NPI 1245229640 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245229640 active?

Yes, as of the latest NPPES snapshot, NPI 1245229640 is active (record last updated 2016-03-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-08.