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

Dr. Derek Leo Oconnor, DDS

Individual provider Dentist · NPI 1376112698

Dr. Derek Leo Oconnor, DDS is a Dentist in Bourbonnais, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2021
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

801 Main St NW
Bourbonnais, IL 60914-2314
Phone: (815) 932-3516
Show map & directions

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

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 019033232 (IL)

Record details

NPI number1376112698
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedJune 21, 2021
Last updated in NPPESJune 21, 2021
Certification dateApril 6, 2021
Mailing address263 Barrington Ln, Bourbonnais, IL 60914-1673

Other providers in Bourbonnais