Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Blaise Pflugi, DO

Internal Medicine Physician in Mason City, IA · enumerated 2015.

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

National Provider Identifier

1790179331

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Registry record

Entity type Individual (Type 1)

Name John Blaise Pflugi

Credential DO

Sex Male

Practice address 621 S. Illinois Ave, Suite 100, Mason City, IA, 50401

Phone (641) 428-6900

Fax (641) 428-6909

Enumeration date Mar 21, 2015

Last updated in NPPES May 24, 2021

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 172103 (OR) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 05241 (IA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1790179331 active?

Yes, as of the latest NPPES snapshot, NPI 1790179331 is active (record last updated 2021-05-24).

How do I verify John Pflugi's NPI record?

Cross-check NPI 1790179331 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 2021-05-24.