Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr. John P Harbour, D.D.S, M.S.D.

Orthodontics and Dentofacial Orthopedics Dentistry in Donaldsonville, LA · enumerated 2007 · authorized official John Harbour, Owner Doctor.

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

National Provider Identifier

1053539239

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Registry record

Entity type Organization (Type 2)

Legal business name Dr. John P Harbour, D.D.S, M.S.D.

Other name <Unavail>

Practice address 200 Railroad Avenue, Donaldsonville, LA, 70346

Phone (225) 473-6436

Fax (225) 927-1817

Enumeration date Apr 23, 2007

Last updated in NPPES Jul 15, 2014

Taxonomy & classification

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 3289 (LA) Primary

Authorized official

Name John Harbour

Title Owner Doctor

Phone (225) 473-6434

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-07-15. Verify at npiregistry.cms.hhs.gov.

Where is Dr. John P Harbour, D.D.S, M.S.D. located?

The practice location on file with NPPES is in Donaldsonville, LA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-15.