Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael E Spieth, MD

Diagnostic Radiology Physician in Marshfield, WI · enumerated 2006.

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

National Provider Identifier

1134229859

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Registry record

Entity type Individual (Type 1)

Name Michael E Spieth

Credential MD

Sex Male

Practice address 1221 W State St, Marshfield, WI, 54449

Phone (715) 209-0235

Fax (715) 898-1008

Enumeration date Sep 23, 2006

Last updated in NPPES Feb 18, 2015

Taxonomy & licenses

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 40878 (WI) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 40878 (WI) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 40048 (IA) Primary

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License 40048 (IA) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License 40048 (IA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 1134229859 active?

Yes, as of the latest NPPES snapshot, NPI 1134229859 is active (record last updated 2015-02-18).

How do I verify Michael Spieth's NPI record?

Cross-check NPI 1134229859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-18.