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Dr. Nancy Elizabeth Guenthner, O.D.

Optometrist in Round Rock, TX · enumerated 2008 · practices at Aspire Vision Care, Pllc.

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

National Provider Identifier

1639335128

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Registry record

Entity type Individual (Type 1)
Name Dr. Nancy Elizabeth Guenthner
Credential O.D.
Sex Female
Practice address 17261 Smyers Ln Ste 100, Round Rock, TX, 78681
Phone (512) 501-2100
Fax (512) 827-2074
Enumeration date Aug 4, 2008
Last updated in NPPES Jun 27, 2022

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 7212TG (TX) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

What specialty is Nancy Guenthner?
Nancy Guenthner is registered in NPPES with the primary taxonomy of Optometrist. 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 2022-06-27.