John Katsis D.D.S., Ltd.
John Katsis D.D.S., Ltd. is a healthcare organization registered as Orthodontics and Dentofacial Orthopedics Dentistry in Bartlett, IL, holding Type 2 (organization) NPI 1194194639 since 2015. The authorized official on file is John Katsis, Orthodontist / Owner.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1194194639 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | John Katsis D.D.S., Ltd. |
| Other name | <Unavail> |
| Practice address | 110 S OAK AVE, Bartlett, IL, 60103 |
| Phone | 6308945557 |
| Enumeration date | 2015-09-15 |
| Last updated in NPPES | 2015-09-15 |
Authorized official
| Name | John Katsis |
|---|---|
| Title | Orthodontist / Owner |
| Phone | 6308945557 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Primary | 019016097 | IL |
Copy-ready billing details
Provider: John Katsis D.D.S., Ltd. NPI: 1194194639 Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry) Address: 110 S OAK AVE, Bartlett, IL, 60103
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1861546392 | John Katsis | Individual | Orthodontics and Dentofacial Orthopedics Dentistry | Bartlett, IL |
Verify this record
Cross-check NPI 1194194639 against the authoritative CMS record: view John Katsis D.D.S., 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
Who is the authorized official for John Katsis D.D.S., Ltd.?
What is the NPI number for John Katsis D.D.S., Ltd.?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-09-15.