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

MS. Diane Marie Gilliard, LCPC, CADC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1609984285

MS. Diane Marie Gilliard, LCPC, CADC is an Addiction (Substance Use Disorder) Counselor in Oak Park, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
LCPC — Licensed Clinical Professional Counselor
A licensed clinical counsellor.
CADC — Certified Alcohol and Drug Counselor
A certified addiction counsellor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

120 S Marion St 4th Fl
Oak Park, IL 60302-2809
Phone: (708) 406-3105
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X (IL)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 13726 (IL)

Record details

NPI number1609984285
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCPC , CADC
Sole proprietorYes
NPI enumeratedAugust 25, 2006
Last updated in NPPESSeptember 11, 2025

Other providers in Oak Park