Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Spalding Sympson, D.D.S.

Orthodontics and Dentofacial Orthopedics Dentistry in Washington, DC · enumerated 2005.

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

National Provider Identifier

1043295231

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Spalding Sympson

Credential D.D.S.

Sex Male

Practice address 6900 Georgia Ave. Nw, Building 2, Room 1d02, Washington, DC, 20307

Phone (202) 782-6815

Fax (202) 782-6987

Enumeration date Dec 9, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 11151 (MD) 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

Where does Thomas Sympson practice?

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

What is the NPI number for Thomas Sympson?

The National Provider Identifier (NPI) for Thomas Sympson is 1043295231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.