Dr. John Jared Harmon, DDS

Dr. John Jared Harmon is a Endodontics provider (Dentist) practicing in Slidell, LA, registered in the NPPES registry with NPI 1508982083 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1508982083
Entity type	Individual (Type 1)
Name	Dr. John Jared Harmon
Credential	DDS
Sex	Male
Practice address	Slidell, LA, 70458
Phone	9856434600
Fax	9856439338
Enumeration date	2007-03-22
Last updated in NPPES	2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223E0200X	Endodontics	Primary	5245	LA

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: John Harmon, DDS
NPI: 1508982083
Taxonomy: 1223E0200X (Endodontics)
Address: Slidell, LA, 70458

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1154526838	Monique Stiegler	Individual	Clinical Social Worker	Slidell, LA
1013185743	Round the Clock Personal Care Service LLC.	Organization	Personal Care Attendant	Slidell, LA
1003084732	Round the Clock Personal Care Service, LLC	Organization	Personal Care Attendant	Slidell, LA

Verify this record

Cross-check NPI 1508982083 against the authoritative CMS record: view Dr. John Jared Harmon on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Harmon?

John Harmon is registered in NPPES with the primary taxonomy of Endodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.