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Hearing Zone

Audiologist-Hearing Aid Fitter in Alameda, CA · enumerated 2007 · authorized official Raymond Crookston, Audiologist.

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

National Provider Identifier

1235354556

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Registry record

Entity type Organization (Type 2)
Legal business name Hearing Zone
Other name <Unavail>
Practice address 2314 Central Ave, Alameda, CA, 94501
Phone (510) 865-8113
Fax (510) 865-8113
Enumeration date Apr 13, 2007
Last updated in NPPES Oct 26, 2009

Taxonomy & classification

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License AU2148 (CA) Primary

Authorized official

Name Raymond Crookston
Title Audiologist
Phone (510) 444-9771

Other identifiers

Identifier Type State Issuer
AU2148 Other CA STATE LICENSE

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 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.
What type of organization is Hearing Zone?
Hearing Zone is registered in NPPES as a Audiologist-Hearing Aid Fitter (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-26.