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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Robert Thodos, D.D.S.

Orthodontics and Dentofacial Orthopedics Dentistry in Algonquin, IL · enumerated 2013.

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

National Provider Identifier

1356681118

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Registry record

Entity type Individual (Type 1)
Name Dr. John Robert Thodos
Credential D.D.S.
Sex Male
Practice address Algonquin, IL, 60102
Phone (847) 458-1437
Fax (847) 458-1628
Enumeration date Feb 15, 2013
Last updated in NPPES Jul 9, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 021.0011229 (IL) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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

How do I verify John Thodos's NPI record?
Cross-check NPI 1356681118 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1356681118 active?
Yes, as of the latest NPPES snapshot, NPI 1356681118 is active (record last updated 2015-07-09).

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