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

Gillian Thornhill, LPC

Individual provider Professional Counselor · NPI 1407975949

Gillian Thornhill, LPC is a Professional Counselor in Park Ridge, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
What do these letters mean?
LPC — Licensed Professional Counselor
A licensed mental health counsellor.

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Practice location Address checks out

422 N Northwest Hwy Ste 335
Park Ridge, IL 60068-3261
Phone: (847) 894-6442
Fax: (630) 954-6066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence 178003972 (IL)

Record details

NPI number1407975949
Entity typeIndividual (Type 1)
GenderFemale
Credentials LPC
Sole proprietorYes
NPI enumeratedMarch 28, 2007
Last updated in NPPESMay 12, 2026
Certification dateMay 12, 2026
Mailing address422 N Northwest Hwy Ste B4, Park Ridge, IL 60068-3272

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