Gillian Thornhill, L.P.C.

Primary specialty

Professional CounselorTaxonomy code 101YP2500X

License

178003972 Issued in IL

Practice address

422 N Northwest Hwy Ste 335
Park Ridge, IL 60068-3261

Phone

(847) 894-6442

Fax

(630) 954-6066

NPI assigned

Mar 28, 2007

Sex

Female

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other names 1

• Gillian Bender Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Thornhill Counseling

  • Professional Counselor
  • Park Ridge, IL
  • NPI 1548034366
  NPD Authorized official
• Counseling Associates Professionals, LTD

  • Social Worker
  • Oak Brook, IL
  • NPI 1477669604
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1175040000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778544000000",
    "number": "1407975949",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "422 N NORTHWEST HWY STE B4",
            "city": "PARK RIDGE",
            "state": "IL",
            "postal_code": "600683272",
            "telephone_number": "847-894-6442",
            "fax_number": "630-954-6066"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "422 N NORTHWEST HWY STE 335",
            "city": "PARK RIDGE",
            "state": "IL",
            "postal_code": "600683261",
            "telephone_number": "847-894-6442",
            "fax_number": "630-954-6066"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THORNHILL",
        "first_name": "GILLIAN",
        "credential": "L.P.C.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-03-28",
        "last_updated": "2026-05-12",
        "certification_date": "2026-05-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "IL",
            "license": "178003972",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "GILLIAN",
            "last_name": "BENDER",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Sunil Thomas
• James Edward Thommes, DDS
• Natalie Thompson, PHARMD
• Ryan Thompson, MD
• Thornhill Counseling
• Anida Thounsavath
• Meghan Tiedge
• Paula Alejandra Tinjaca Balaguera, SLPA
• Richard M Tinkoff
• Robert S. Tinkoff, D.D.S.

• Professional Counselor in Park Ridge, IL
• Providers in Park Ridge, IL by specialty
• Professional Counselor in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 12, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.