Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Alexander Constantine Tzanos, DDS

Individual provider Periodontics · NPI 1821250630

Dr. Alexander Constantine Tzanos, DDS is a Periodontics in Crystal Lake, Illinois. Works from 3 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2008
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

411 E Congress Pkwy Ste D
Crystal Lake, IL 60014-6247
Phone: (814) 455-6550
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 220 N Smith St Ste 125, Palatine, IL 60067-2488 — (847) 358-3939
  • 1481 W 10th St, Indianapolis, IN 46202-2803 — (317) 988-2022

Specialties & licences

Periodontics (primary) Taxonomy 1223P0300X · Licence 019027377 (IL)

Record details

NPI number1821250630
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJuly 2, 2008
Last updated in NPPESMay 28, 2021
Certification dateMay 28, 2021