Dr. H Ray Duncan, DDS
Dr. H Ray Duncan is a Orthodontics and Dentofacial Orthopedics Dentistry provider (Dentist) practicing in Aberdeen, SD, registered in the NPPES registry with NPI 1750427886 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at H. Ray Duncan, DDS, PC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1750427886 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. H Ray Duncan |
| Credential | DDS |
| Sex | Male |
| Practice address | Aberdeen, SD, 57401 |
| Phone | 6052255761 |
| Fax | 6052253296 |
| Enumeration date | 2007-01-29 |
| Last updated in NPPES | 2007-08-10 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Primary | M354 | SD |
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Secondary | 1850 | ND |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: H Duncan, DDS NPI: 1750427886 Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry) Address: Aberdeen, SD, 57401
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1699967968 | H. Ray Duncan, DDS, PC | Organization | Orthodontics and Dentofacial Orthopedics Dentistry | Aberdeen, SD |
Verify this record
Cross-check NPI 1750427886 against the authoritative CMS record: view Dr. H Ray Duncan 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-08-10.