Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael S Messmer, PA

Physician Assistant in Sturgis, SD · enumerated 2006.

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

National Provider Identifier

1235225137

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Registry record

Entity type Individual (Type 1)

Name Michael S Messmer

Credential PA

Sex Male

Practice address 890 Lazelle St, Sturgis, SD, 57785

Phone (605) 720-2600

Fax (605) 720-2611

Enumeration date Oct 5, 2006

Last updated in NPPES Feb 5, 2013

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0036 (SD) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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.

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Frequently asked questions

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.

What specialty is Michael Messmer?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-05.