Mark R Harrison DDS PA

Mark R Harrison DDS PA is a healthcare organization registered as Pediatric Dentistry in Exeter, NH, holding Type 2 (organization) NPI 1508875329 since 2006. The authorized official on file is Mark Harrison, Dentist / President.

✓ Active NPI ✓ Valid NPI checksum

NPI	1508875329
Entity type	Organization (Type 2)
Legal business name	Mark R Harrison DDS PA
Practice address	40 PORTSMOUTH AVE, Exeter, NH, 03833
Phone	6037780400
Enumeration date	2006-08-08
Last updated in NPPES	2020-08-22

Authorized official

Name	Mark Harrison
Title	Dentist / President
Phone	6037780400

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
1223P0221X	Pediatric Dentistry	Primary	2251	NH

Copy-ready billing details

Provider: Mark R Harrison DDS PA
NPI: 1508875329
Taxonomy: 1223P0221X (Pediatric Dentistry)
Address: 40 PORTSMOUTH AVE, Exeter, NH, 03833

Providers at this address

NPI	Name	Type	Specialty	Location
1407865215	Mark Harrison	Individual	Pediatric Dentistry	Exeter, NH
1144846007	Exeter Pediatric Dentistry and Orthodontics, Pllc	Organization	Pediatric Dentistry	Exeter, NH
1467190967	Natalie A Laucius Dmd Pllc	Organization	Pediatric Dentistry	Exeter, NH

Verify this record

Cross-check NPI 1508875329 against the authoritative CMS record: view Mark R Harrison DDS PA 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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Mark R Harrison DDS PA located?

The practice location on file with NPPES is in Exeter, NH.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.