Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dean L Hartwig, O. D.

Optometrist in Iron Mountain, MI · enumerated 2005 · practices at Iron Mountain Vamc.

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

National Provider Identifier

1457355067

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Registry record

Entity type Individual (Type 1)

Name Dr. Dean L Hartwig

Credential O. D.

Sex Male

Practice address 325 E H St, Iron Mountain, MI, 49801

Phone (906) 774-3300

Enumeration date Jun 10, 2005

Last updated in NPPES Dec 7, 2018

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2367-35 (WI) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 4901003320 (MI) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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 1457355067 active?

Yes, as of the latest NPPES snapshot, NPI 1457355067 is active (record last updated 2018-12-07).

How do I verify Dean Hartwig's NPI record?

Cross-check NPI 1457355067 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 2018-12-07.