Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. John E Mertz, MD PHD

Emergency Medicine Physician in St Cloud, MN · enumerated 2006.

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

National Provider Identifier

1346217874

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Registry record

Entity type Individual (Type 1)

Name Mr. John E Mertz

Credential MD PHD

Sex Male

Practice address 1406 6 Ave N, St Cloud, MN, 56301

Phone (320) 255-5657

Fax (320) 656-7194

Enumeration date Mar 3, 2006

Last updated in NPPES Nov 5, 2007

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 43425 (MN) 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.

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Frequently asked questions

How do I verify John Mertz's NPI record?

Cross-check NPI 1346217874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1346217874 active?

Yes, as of the latest NPPES snapshot, NPI 1346217874 is active (record last updated 2007-11-05).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-05.