Updated

Alexander C Tzanos, DDS vs John A Pizarek

Both: Greater Chicago, IL-IN · Periodontics.

How they differ

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Alexander C Tzanos, DDSJohn A Pizarek
LocationCrystal Lake, IL 60014Crystal Lake, IL 60012
Specialty license Periodontics Periodontics
Licensed for 15 years or more Under 5 years
Discipline record No discipline on record No discipline on record
License expires Sep 30, 2027 Sep 30, 2027
Discipline cases on record 0 0
License first issued Aug 2, 2010 Mar 15, 2025
License number 021002365 021003422
County Mchenry County —
Record last updated in the dataset Aug 4, 2024 (over a year old; IDFPR's license lookup shows any change since) —
Source recordIDFPR Professional Licensing (data.illinois.gov), verified Oct 20, 2026IDFPR Professional Licensing (data.illinois.gov), verified Oct 20, 2026