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

Mr. Oliver M Williams, LCSW

Individual provider Clinical Social Worker · NPI 1861779795

Mr. Oliver M Williams, LCSW is a Clinical Social Worker in Orland Park, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2011
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Practice location Address checks out

14400 John Humphrey Dr
Orland Park, IL 60462-2897
Phone: (708) 226-1360
Fax: (708) 226-1629
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 149.003154 (IL)

Record details

NPI number1861779795
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedNovember 6, 2011
Last updated in NPPESNovember 6, 2011

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