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B. S. Wisniewski Custom Hearing Instruments

Hearing Instrument Specialist in Greenfield, WI · enumerated 2019 · authorized official Mary Beth Wisniewski, President/Owner.

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

National Provider Identifier

1306304001

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Registry record

Entity type Organization (Type 2)
Legal business name B. S. Wisniewski Custom Hearing Instruments
Practice address 4325 S. 60th St. Unit 2, Greenfield, WI, 53220
Phone (414) 321-2020
Fax (414) 321-3113
Enumeration date Mar 12, 2019
Last updated in NPPES Apr 25, 2024

Taxonomy & classification

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers Primary

Authorized official

Name Mary Beth Wisniewski
Title President/Owner
Phone (414) 321-2020

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 type of organization is B. S. Wisniewski Custom Hearing Instruments?
B. S. Wisniewski Custom Hearing Instruments is registered in NPPES as a Hearing Instrument Specialist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-25.