Dennis Mills, DDS, PC
Dennis Mills, DDS, PC is a healthcare organization registered as General Practice Dentistry in Deadwood, SD, holding Type 2 (organization) NPI 1659577757 since 2007. The authorized official on file is Dennis Mills, Dentist.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1659577757 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Dennis Mills, DDS, PC |
| Other name | <Unavail> |
| Practice address | 88 CHARLES ST, Deadwood, SD, 57732 |
| Phone | 6055783810 |
| Fax | 6055783812 |
| Enumeration date | 2007-06-25 |
| Last updated in NPPES | 2007-07-17 |
Authorized official
| Name | Dennis Mills |
|---|---|
| Title | Dentist |
| Phone | 6055783810 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | M395 | SD |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7809990 | Medicaid | SD | — |
Copy-ready billing details
Provider: Dennis Mills, DDS, PC NPI: 1659577757 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 88 CHARLES ST, Deadwood, SD, 57732
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881649135 | Michael Guilbert | Individual | Optometrist | Deadwood, SD |
| 1871693028 | Dennis Mills | Individual | General Practice Dentistry | Deadwood, SD |
| 1063512226 | Lennard Hopper | Individual | General Practice Dentistry | Deadwood, SD |
| 1932288131 | Michael J Guilbert, Od, PC | Organization | Optometrist | Deadwood, SD |
| 1679755474 | Lennard Hopper, D.D.S., P.C. | Organization | General Practice Dentistry | Deadwood, SD |
| 1235417148 | David Czerny | Individual | Optometrist | Deadwood, SD |
| 1003168980 | Deadwood Eye Care LLC | Organization | Optometrist | Deadwood, SD |
Verify this record
Cross-check NPI 1659577757 against the authoritative CMS record: view Dennis Mills, DDS, PC 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
What type of organization is Dennis Mills, DDS, PC?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2007-07-17.