Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Siems, PHARMD

Pharmacist in Marshfield, WI · enumerated 2023.

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

National Provider Identifier

1467140590

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Registry record

Entity type Individual (Type 1)

Name Michael Siems

Credential PHARMD

Sex Male

Practice address 1307 N Saint Joseph Ave, Marshfield, WI, 54449

Phone (715) 389-7474

Fax (715) 221-8748

Enumeration date Apr 26, 2023

Last updated in NPPES Apr 26, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 16284-40 (WI) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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

What specialty is Michael Siems?

Michael Siems is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-26.