Dr. John Phillip Duncan, DDS

Dr. John Phillip Duncan is a General Practice Dentistry provider (Dentist) practicing in Manchester, TN, registered in the NPPES registry with NPI 1700570272 since 2023. The credential DDS stands for Doctor of Dental Surgery. Practices at Sleep Relief Solutions LLC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1700570272
Entity type	Individual (Type 1)
Name	Dr. John Phillip Duncan
Credential	DDS
Sex	Male
Practice address	1423 MCARTHUR ST, Manchester, TN, 37355
Phone	9317280469
Enumeration date	2023-06-06
Last updated in NPPES	2023-06-06

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	12233	TN

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: John Duncan, DDS
NPI: 1700570272
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 1423 MCARTHUR ST, Manchester, TN, 37355

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1639686199	Sleep Relief Solutions LLC	Organization	Customized Equipment (DME)	Manchester, TN
1700445939	Chad Tribble	Individual	Dentist	Manchester, TN

Verify this record

Cross-check NPI 1700570272 against the authoritative CMS record: view Dr. John Phillip 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

What specialty is John Duncan?

John Duncan is registered in NPPES with the primary taxonomy of General Practice Dentistry. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-06-06.