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John Katsis D.D.S., Ltd.

Orthodontics and Dentofacial Orthopedics Dentistry in Bartlett, IL · enumerated 2015 · authorized official John Katsis, Orthodontist / Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1194194639

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Registry record

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 (630) 894-5557
Enumeration date Sep 15, 2015
Last updated in NPPES Sep 15, 2015

Taxonomy & classification

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 019016097 (IL) Primary

Authorized official

Name John Katsis
Title Orthodontist / Owner
Phone (630) 894-5557

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.

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Frequently asked questions

Who is the authorized official for John Katsis D.D.S., Ltd.?
NPPES lists John Katsis (Orthodontist / Owner) as the authorized official for this organization.
What is the NPI number for John Katsis D.D.S., Ltd.?
The NPI for John Katsis D.D.S., Ltd. is 1194194639, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-15.