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

William Carl Rook, MA, LCPC

Individual provider Mental Health Counselor · NPI 1194736397

William Carl Rook, MA, LCPC is a Mental Health Counselor in O Fallon, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
LCPC — Licensed Clinical Professional Counselor
A licensed clinical counsellor.

See every abbreviation used in this directory →

Practice location Address checks out

732 Sussex Way Ste B
O Fallon, IL 62269-3074
Phone: (618) 531-8501
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X (IL)

Record details

NPI number1194736397
Entity typeIndividual (Type 1)
GenderMale
Credentials MA , LCPC
Sole proprietorYes
NPI enumeratedAugust 11, 2006
Last updated in NPPESJuly 9, 2007

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