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

Dr. John William Clancy, DDS

Individual provider General Practice Dentistry · NPI 1821155920

Dr. John William Clancy, DDS is a General Practice Dentistry in Glen Ellyn, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
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

22 N Park Blvd
Glen Ellyn, IL 60137-5770
Phone: (630) 858-3321
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X (IL)

Record details

NPI number1821155920
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJanuary 2, 2007
Last updated in NPPESJuly 8, 2007
Mailing address22 N Park Blvd, Glen Ellyn, IL 60137-5770

Other providers in Glen Ellyn