Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Eugene T Giannini, D.D.S.

General Practice Dentistry in Washington, DC · enumerated 2005.

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

National Provider Identifier

1548266364

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Registry record

Entity type Individual (Type 1)

Name Dr. Eugene T Giannini

Credential D.D.S.

Sex Male

Practice address 4801 Wisconsin Ave Nw, Ste 200, Washington, DC, 20016

Phone (202) 244-4111

Fax (202) 244-6389

Enumeration date Jun 27, 2005

Last updated in NPPES Apr 15, 2013

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DEN5141 (DC) Primary

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

How do I verify Eugene Giannini's NPI record?

Cross-check NPI 1548266364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1548266364 active?

Yes, as of the latest NPPES snapshot, NPI 1548266364 is active (record last updated 2013-04-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-15.