Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chester County Therapy Collective

Clinical Social Worker in Downingtown, PA · enumerated 2025 · authorized official Jessica Diienno, Owner/Therapist.

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

National Provider Identifier

1013716893

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Registry record

Entity type Organization (Type 2)

Legal business name Chester County Therapy Collective

Practice address 257 W Uwchlan Ave, Downingtown, PA, 19335

Phone (484) 876-1512

Enumeration date Mar 12, 2025

Last updated in NPPES Mar 12, 2025

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Authorized official

Name Jessica Diienno

Title Owner/Therapist

Phone (484) 876-1512

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 2025-03-12. Verify at npiregistry.cms.hhs.gov.

Where is Chester County Therapy Collective located?

The practice location on file with NPPES is in Downingtown, PA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-12.