Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Michael Theriot, M.D.

Diagnostic Radiology Physician in Marrero, LA · enumerated 2014.

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

National Provider Identifier

1821400904

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Registry record

Entity type Individual (Type 1)

Name David Michael Theriot

Credential M.D.

Sex Male

Practice address 1111 Medical Center Blvd Ste 108, Marrero, LA, 70072

Phone (504) 349-1461

Enumeration date May 23, 2014

Last updated in NPPES Jun 9, 2020

Taxonomy & licenses

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 320813 (LA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 320813 (LA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify David Theriot's NPI record?

Cross-check NPI 1821400904 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1821400904 active?

Yes, as of the latest NPPES snapshot, NPI 1821400904 is active (record last updated 2020-06-09).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-09.