Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Willow Tree Counseling Services, Pllc

Mental Health Clinic/Center (Including Community Mental Health Center) in Barrington, IL · enumerated 2025 · authorized official Nathalia Lopez, Owner.

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

National Provider Identifier

1417744947

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Registry record

Entity type Organization (Type 2)

Legal business name Willow Tree Counseling Services, Pllc

Practice address 1531 S Grove Ave Unit 204, Barrington, IL, 60010

Phone (847) 381-2700

Enumeration date Apr 21, 2025

Last updated in NPPES Apr 21, 2025

Taxonomy & classification

261QM0801X Mental Health Clinic/Center (Including Community Mental Health Center) Ambulatory Health Care Facilities Primary

Authorized official

Name Nathalia Lopez

Title Owner

Phone (732) 598-1837

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 2025-04-21. Verify at npiregistry.cms.hhs.gov.

Where is Willow Tree Counseling Services, Pllc located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-21.