Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harold Seigel, DDS

General Practice Dentistry in Falls Church, VA · enumerated 2008 · practices at Sanae Bouallali Berrada.

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

National Provider Identifier

1164697363

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Registry record

Entity type Individual (Type 1)

Name Harold Seigel

Credential DDS

Sex Male

Practice address 7641 Leesburg Pike, Falls Church, VA, 22043

Phone (703) 821-8111

Fax (703) 821-1512

Enumeration date Apr 29, 2008

Last updated in NPPES Apr 29, 2008

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 5927 (VA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Harold Seigel practice?

The practice location on file with NPPES is in Falls Church, VA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Harold Seigel?

The National Provider Identifier (NPI) for Harold Seigel is 1164697363, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Sanae Bouallali Berrada General Practice Dentistry · Falls Church, VA NPI 1689009961 Aya Jawad General Practice Dentistry · Falls Church, VA NPI 1023660925

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-29.