Dr. Gregory S St. John, DDS

Dr. Gregory S St. John is a General Practice Dentistry provider (Dentist) practicing in Wildwood, MO, registered in the NPPES registry with NPI 1972636413 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Gregory S. St. John, DDS, PC (listed at the same practice address in NPPES).

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NPI	1972636413
Entity type	Individual (Type 1)
Name	Dr. Gregory S St. John
Credential	DDS
Sex	Male
Practice address	16429 VILLAGE PLAZA VIEW DR, Wildwood, MO, 63011
Phone	6364589300
Enumeration date	2007-03-13
Last updated in NPPES	2021-07-07

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	014718	MO

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

Copy-ready billing details

Provider: Gregory St. John, DDS
NPI: 1972636413
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 16429 VILLAGE PLAZA VIEW DR, Wildwood, MO, 63011

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1174775407	Gregory S. St. John, DDS, PC	Organization	Dental Clinic/Center	Wildwood, MO

Verify this record

Cross-check NPI 1972636413 against the authoritative CMS record: view Dr. Gregory S St. John 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

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.

What specialty is Gregory St. John?

Gregory St. John 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-07-07.