Leon J Witkowski Jr DDS Ltd
Leon J Witkowski Jr DDS Ltd is a healthcare organization registered as Dentist in Mokena, IL, holding Type 2 (organization) NPI 1962536508 since 2007. The authorized official on file is Leon Witkowski, Owner Practioner DDS.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1962536508 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Leon J Witkowski Jr DDS Ltd |
| Practice address | 19665 S LA GRANGE ROAD, Mokena, IL, 60448 |
| Phone | 7084799888 |
| Fax | 7084798900 |
| Enumeration date | 2007-03-15 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Leon Witkowski |
|---|---|
| Title | Owner Practioner DDS |
| Phone | 7084799888 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | — | IL |
Copy-ready billing details
Provider: Leon J Witkowski Jr DDS Ltd NPI: 1962536508 Taxonomy: 122300000X (Dentist) Address: 19665 S LA GRANGE ROAD, Mokena, IL, 60448
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1528192168 | Leon Witkowski | Individual | General Practice Dentistry | Mokena, IL |
Verify this record
Cross-check NPI 1962536508 against the authoritative CMS record: view Leon J Witkowski Jr DDS Ltd 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 a Type 2 NPI?
What type of organization is Leon J Witkowski Jr DDS Ltd?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.