Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Willow Tree Therapy Center Pllc

Clinical Psychologist in Naperville, IL · enumerated 2016 · authorized official Amy Bilka, Clinical Psychologist.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1104282821

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Registry record

Entity type Organization (Type 2)

Legal business name Willow Tree Therapy Center Pllc

Practice address 1813 N Mill St Ste F, Naperville, IL, 60563

Phone (630) 448-0701

Enumeration date Jan 11, 2016

Last updated in NPPES Jun 28, 2026

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071008661 (IL) Primary

Authorized official

Name Amy Bilka

Title Clinical Psychologist

Phone (630) 448-0701

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-06-28. Verify at npiregistry.cms.hhs.gov.

Where is Willow Tree Therapy Center Pllc located?

The practice location on file with NPPES is in Naperville, IL.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-28.