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

Isaac Taylor Gerhartz

Optician in Greenfield, WI · enumerated 2025.

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

National Provider Identifier

1013711399

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Registry record

Entity type Individual (Type 1)
Name Isaac Taylor Gerhartz
Sex Male
Practice address Greenfield, WI, 53228
Phone (414) 209-0359
Fax (414) 427-6168
Enumeration date Apr 3, 2025
Last updated in NPPES Apr 10, 2025

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

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License ABOC-264958 (WI) 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

Where does Isaac Gerhartz practice?
The practice location on file with NPPES is in Greenfield, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Isaac Gerhartz?
The National Provider Identifier (NPI) for Isaac Gerhartz is 1013711399, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-10.