Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Langston D. Smith, D.M.D.

Endodontics in Washington, DC · enumerated 2007.

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

National Provider Identifier

1396899688

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Registry record

Entity type Individual (Type 1)

Name Dr. Langston D. Smith

Credential D.M.D.

Sex Male

Practice address 600 W St Nw, Washington, DC, 20059

Phone (202) 806-0341

Enumeration date Jan 23, 2007

Last updated in NPPES Apr 20, 2009

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License 4792 (KY) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 Langston Smith's NPI record?

Cross-check NPI 1396899688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396899688 active?

Yes, as of the latest NPPES snapshot, NPI 1396899688 is active (record last updated 2009-04-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-20.