Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stephen A Sewall, DDS, PC

General Practice Dentistry in Exeter, NH · enumerated 2007 · authorized official Stephen Sewall, President.

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

National Provider Identifier

1699983809

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Registry record

Entity type Organization (Type 2)

Legal business name Stephen A Sewall, DDS, PC

Practice address 9 Hampton Rd, Exeter, NH, 03833

Phone (603) 778-8407

Fax (603) 778-3017

Enumeration date May 19, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License 1345 (NH) Primary

Authorized official

Name Stephen Sewall

Title President

Phone (603) 778-8407

Other identifiers

Identifier	Type	State	Issuer
99001820	Medicaid	NH	-

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 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 Stephen A Sewall, DDS, PC located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.