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
Mailing address411 E Congress Pkwy Ste D, Crystal Lake, IL 60014-6247