Dr. Leon Joseph Witkowski III, DDS

Dr. Leon Joseph Witkowski III is a General Practice Dentistry provider (Dentist) practicing in Mokena, IL, registered in the NPPES registry with NPI 1528192168 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Leon J Witkowski Jr DDS Ltd (listed at the same practice address in NPPES).

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NPI	1528192168
Entity type	Individual (Type 1)
Name	Dr. Leon Joseph Witkowski III
Credential	DDS
Sex	Male
Practice address	19665 S LA GRANGE ROAD, Mokena, IL, 60448
Phone	7084799888
Fax	7084798900
Enumeration date	2007-03-15
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	—	IL

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

Copy-ready billing details

Provider: Leon Witkowski, DDS
NPI: 1528192168
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 19665 S LA GRANGE ROAD, Mokena, IL, 60448

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1962536508	Leon J Witkowski Jr DDS Ltd	Organization	Dentist	Mokena, IL

Verify this record

Cross-check NPI 1528192168 against the authoritative CMS record: view Dr. Leon Joseph Witkowski III 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 Leon Witkowski?

The National Provider Identifier (NPI) for Leon Witkowski is 1528192168, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leon Witkowski practice?

The practice location on file with NPPES is in Mokena, IL. 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.