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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Sarah Mackenzie Seilhan

Infusion Therapy Registered Nurse in Clarksville, TN · enumerated 2026 · practices at Gateway Foot and Ankle Center, Plc.

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

National Provider Identifier

1417805458

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Registry record

Entity type Individual (Type 1)
Name Mrs. Sarah Mackenzie Seilhan
Sex Female
Practice address Clarksville, TN, 37040
Phone (931) 548-0068
Enumeration date Mar 17, 2026
Last updated in NPPES Mar 17, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WI0500X Infusion Therapy Registered Nurse Nursing Service Providers · License 891917 (TX) Primary

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 specialty is Sarah Seilhan?
Sarah Seilhan is registered in NPPES with the primary taxonomy of Infusion Therapy Registered Nurse. 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 2026-03-17.