H. Ray Duncan, DDS, PC

H. Ray Duncan, DDS, PC is a healthcare organization registered as Orthodontics and Dentofacial Orthopedics Dentistry in Aberdeen, SD, holding Type 2 (organization) NPI 1699967968 since 2007. The authorized official on file is H. Duncan, Orthodontist.

✓ Active NPI ✓ Valid NPI checksum

NPI	1699967968
Entity type	Organization (Type 2)
Legal business name	H. Ray Duncan, DDS, PC
Practice address	2319 6TH AVE SE, Aberdeen, SD, 57401
Phone	6052255761
Fax	6052253296
Enumeration date	2007-08-10
Last updated in NPPES	2007-08-10

Authorized official

Name	H. Duncan
Title	Orthodontist
Phone	6062255761

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
1223X0400X	Orthodontics and Dentofacial Orthopedics Dentistry	Primary	M354	SD

Copy-ready billing details

Provider: H. Ray Duncan, DDS, PC
NPI: 1699967968
Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry)
Address: 2319 6TH AVE SE, Aberdeen, SD, 57401

Providers at this address

NPI	Name	Type	Specialty	Location
1750427886	H Duncan	Individual	Orthodontics and Dentofacial Orthopedics Dentistry	Aberdeen, SD

Verify this record

Cross-check NPI 1699967968 against the authoritative CMS record: view H. Ray Duncan, 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

Where is H. Ray Duncan, DDS, PC located?

The practice location on file with NPPES is in Aberdeen, SD.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-08-10. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2007-08-10.