NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dennis Mills, DDS, PC

General Practice Dentistry in Deadwood, SD · enumerated 2007 · authorized official Dennis Mills, Dentist.

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

National Provider Identifier

1659577757

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dennis Mills, DDS, PC
Other name <Unavail>
Practice address 88 Charles St, Deadwood, SD, 57732
Phone (605) 578-3810
Fax (605) 578-3812
Enumeration date Jun 25, 2007
Last updated in NPPES Jul 17, 2007

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License M395 (SD) Primary

Authorized official

Name Dennis Mills
Title Dentist
Phone (605) 578-3810

Other identifiers

Identifier Type State Issuer
7809990 Medicaid SD -

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

What type of organization is Dennis Mills, DDS, PC?
Dennis Mills, DDS, PC is registered in NPPES as a General Practice Dentistry (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-17.