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

Dr. Dennis James McDowell, DDS

Individual provider Dentist · NPI 1720150097

Dr. Dennis James McDowell, DDS is a Dentist in Crystal Lake, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
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

690 N Il Route 31 Ste E
Crystal Lake, IL 60012-3790
Phone: (815) 455-6120
Fax: (815) 455-7024
Show map & directions

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

Specialties & licences

Dentist (primary) Taxonomy 122300000X (IL)

Record details

NPI number1720150097
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedNovember 14, 2006
Last updated in NPPESJuly 8, 2007
Mailing address690 N Il Route 31, Suite E, Crystal Lake, IL 60012-3790

Other providers in Crystal Lake