Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Carolyn L Alto, MA

Audiologist-Hearing Aid Fitter in Cincinnati, OH · enumerated 2008.

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

National Provider Identifier

1871740035

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Registry record

Entity type Individual (Type 1)

Name Ms. Carolyn L Alto

Credential MA

Sex Female

Practice address 2123 Auburn Ave, Cincinnati, OH, 45219

Phone (513) 421-5558

Fax (513) 632-5804

Enumeration date Aug 19, 2008

Last updated in NPPES Oct 23, 2020

Taxonomy & licenses

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License A00871 (OH) Primary

Other identifiers

Identifier	Type	State	Issuer
H059881	Other	OH	MEDICARE PTAN

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

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.

What specialty is Carolyn Alto?

Carolyn Alto is registered in NPPES with the primary taxonomy of Audiologist-Hearing Aid Fitter. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-23.