Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peggy Ann O'Neill, D.D.S.

General Practice Dentistry in Houston, TX · enumerated 2007 · practices at The University of Texas Health Science Center at Houston.

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

National Provider Identifier

1295859908

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Registry record

Entity type Individual (Type 1)

Name Dr. Peggy Ann O'Neill

Credential D.D.S.

Sex Female

Practice address 6516 M D Anderson Blvd, Houston, TX, 77030

Phone (713) 500-4263

Fax (713) 500-4358

Enumeration date Mar 19, 2007

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 16448 (TX) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
J0076686	Other	TX	STATE DRUG PERMIT

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Peggy O'Neill?

Peggy O'Neill is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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 2023-03-07.