Organization Active NPI

Willow Tree Therapy Center PLLC

  • Clinical Psychologist
  • Naperville, IL
National Provider Identifier
1104282821
Registry record updated Jun 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
071008661 Issued in IL
Legal business name
WILLOW TREE THERAPY CENTER PLLC
Practice address
1813 N Mill St Ste F
Naperville, IL 60563-4872
Phone
(630) 448-0701
NPI assigned
Jan 11, 2016
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 28, 2026

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

Authorized official

Name
Dr. Amy Helen Bilka, PSY.D.
Title
Clinical Psychologist
Phone
(630) 448-0701

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical PsychologistGroup: 193400000X SINGLE SPECIALTY GROUP 103TC0700X 071008661 IL Primary

Addresses

Primary practice location

1813 N Mill St Ste F
Naperville, IL 60563-4872

Mailing address

1813 N Mill St Ste F
Naperville, IL 60563-4872
Phone (630) 448-0701

National Provider Directory

National Provider Directory

NPI Registry JSON

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

{
    "created_epoch": "1452470400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1782604800000",
    "number": "1104282821",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1813 N MILL ST STE F",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605634872",
            "telephone_number": "630-448-0701"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1813 N MILL ST STE F",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605634872",
            "telephone_number": "630-448-0701"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WILLOW TREE THERAPY CENTER PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2016-01-11",
        "last_updated": "2026-06-28",
        "certification_date": "2026-06-28",
        "status": "A",
        "authorized_official_last_name": "BILKA",
        "authorized_official_first_name": "AMY",
        "authorized_official_middle_name": "HELEN",
        "authorized_official_title_or_position": "CLINICAL PSYCHOLOGIST",
        "authorized_official_telephone_number": "630-448-0701",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PSY.D."
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Psychologist, Clinical",
            "state": "IL",
            "license": "071008661",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Naperville, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 28, 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.