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Mrs. Peggy Ann O'Neill, R. EEG/EPT CNIM

Electroneurodiagnostic Specialist/Technologist in Milwaukee, WI · enumerated 2015.

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

National Provider Identifier

1508233578

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Registry record

Entity type Individual (Type 1)
Name Mrs. Peggy Ann O'Neill
Credential R. EEG/EPT CNIM
Sex Female
Practice address 333 W Brown Deer Rd, Suite 240, Milwaukee, WI, 53217
Phone (414) 351-6666
Fax (414) 351-6999
Enumeration date Aug 26, 2015
Last updated in NPPES Aug 26, 2015

Taxonomy & licenses

246ZE0600X Electroneurodiagnostic Specialist/Technologist Technologists, Technicians & Other Technical Service Providers 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

What specialty is Peggy O'Neill?
Peggy O'Neill is registered in NPPES with the primary taxonomy of Electroneurodiagnostic Specialist/Technologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-26.