Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Bys Speech and Occupational Therapy Services, LLC

Speech-Language Pathologist in Darien, IL · enumerated 2011 · authorized official Matthew Sullivan, Cfo.

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

National Provider Identifier

1316224462

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Registry record

Entity type Organization (Type 2)

Legal business name Bys Speech and Occupational Therapy Services, LLC

Practice address 8201 Cass Ave, Darien, IL, 60561

Phone (630) 590-5571

Fax (630) 326-7175

Enumeration date Nov 3, 2011

Last updated in NPPES Feb 4, 2021

Taxonomy & classification

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers Primary

Authorized official

Name Matthew Sullivan

Title Cfo

Phone (630) 590-5571

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Bys Speech and Occupational Therapy Services, LLC?

The NPI for Bys Speech and Occupational Therapy Services, LLC is 1316224462, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Bys Speech and Occupational Therapy Services, LLC?

NPPES lists Matthew Sullivan (Cfo) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-04.