Dr. John C Sponenberg, DDS

Dr. John C Sponenberg is a General Practice Dentistry provider (Dentist) practicing in Mexia, TX, registered in the NPPES registry with NPI 1629199336 since 2007. The credential DDS stands for Doctor of Dental Surgery.

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NPI	1629199336
Entity type	Individual (Type 1)
Name	Dr. John C Sponenberg
Credential	DDS
Sex	Male
Practice address	3 MILES WEST HWY 171, Mexia, TX, 76667
Phone	2545621863
Enumeration date	2007-04-02
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	11623	TX

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 Sponenberg, DDS
NPI: 1629199336
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 3 MILES WEST HWY 171, Mexia, TX, 76667

Verify this record

Cross-check NPI 1629199336 against the authoritative CMS record: view Dr. John C Sponenberg 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 is the NPI number for John Sponenberg?

The National Provider Identifier (NPI) for John Sponenberg is 1629199336, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Sponenberg practice?

The practice location on file with NPPES is in Mexia, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.