Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maria Campbell Ballentine, AUD

Audiologist in Worcester, MA · enumerated 2019.

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

National Provider Identifier

1235799917

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Registry record

Entity type Individual (Type 1)

Name Maria Campbell Ballentine

Credential AUD

Sex Female

Practice address 55 Lake Ave N, Worcester, MA, 01655

Phone (774) 442-3996

Fax (774) 442-5170

Enumeration date Jun 16, 2019

Last updated in NPPES Dec 3, 2020

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 01409 (MD) Secondary

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 4804 (MA) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD 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

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 Maria Ballentine?

Maria Ballentine is registered in NPPES with the primary taxonomy of Audiologist. 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 2020-12-03.