NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Marshfield Clinic

Durable Medical Equipment & Medical Supplies in Wausau, WI · enumerated 2009 · authorized official Matthew Thomas, Treasurer, Marshfield Clinic, Inc..

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

National Provider Identifier

1225267834

Verified

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Registry record

Entity type Organization (Type 2)
Legal business name Marshfield Clinic
Other name <Unavail>
Parent organization Marshfield Clinic
Practice address 2600 Stewart Center, Wausau, WI, 54401
Phone (715) 845-8841
Enumeration date Jul 6, 2009
Last updated in NPPES Jun 15, 2016

Taxonomy & classification

332B00000X Durable Medical Equipment & Medical Supplies Suppliers Primary

Authorized official

Name Matthew Thomas
Title Treasurer, Marshfield Clinic, Inc.
Phone (715) 387-5511

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

What is the NPI number for Marshfield Clinic?
The NPI for Marshfield Clinic is 1225267834, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Marshfield Clinic?
NPPES lists Matthew Thomas (Treasurer, Marshfield Clinic, Inc.) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-15.