GILLIAN THORNHILL L.P.C.
NPI 1407975949
Counselor - Professional in Park Ridge, IL

Q: What is Gillian Thornhill's NPI number?

The NPI number for Gillian Thornhill is 1407975949. It was assigned to this individual provider in the NPPES registry on March 28, 2007. The provider is also known as Gillian Bender.

Q: What is Gillian Thornhill's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Q: When was this NPI record last updated?

The NPPES record for Gillian Thornhill was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 28, 2007

422 N NORTHWEST HWY STE 335, PARK RIDGE, IL 60068(847) 894-6442(630) 954-6066 Get Directions Write a Review

NPPES record last updated: May 12, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Gillian Thornhill L.p.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GILLIAN THORNHILL L.P.C. (NPI 1407975949) is an individual professional provider in Park Ridge, Illinois, licensed in Illinois (178003972) and active in the NPI registry since March 2007.

NPPES Registry Identity

NPI1407975949

Entity TypeIndividualFemale

Primary Taxonomy101YP2500X

Provider Legal NameGILLIAN THORNHILLCredential: L.P.C.

Location Address422 N NORTHWEST HWY STE 335Park Ridge, IL 60068-3261

Mailing Address422 N Northwest Hwy Ste B4Park Ridge, IL 60068-3272 · (847) 894-6442 · Fax (630) 954-6066

Phone(847) 894-6442

Fax(630) 954-6066

Sole ProprietorYes

Enumeration DateMarch 28, 2007

Last NPPES UpdateMay 12, 2026

NPPES CertifiedMay 12, 2026

✔ NPI 1407975949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers

Taxonomy Code101YP2500X

License✔ Licensed in IL · 178003972

422 N NORTHWEST HWY STE 335, Park Ridge, IL 60068

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Other Names 1

Former Name (1)Gillian Bender

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gillian Thornhill's NPI number?

The NPI number for Gillian Thornhill is 1407975949. It was assigned to this individual provider in the NPPES registry on March 28, 2007. The provider is also known as Gillian Bender.

Where is Gillian Thornhill located?

Gillian Thornhill practices at 422 N Northwest Hwy Ste 335, Park Ridge, IL 60068. The listed phone number is (847) 894-6442.

What is Gillian Thornhill's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for Gillian Thornhill was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.