Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Kenneth Tworek, MSW, LSW, CADC
Social Worker in Lisle, IL · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912878158
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Registry record
Entity type Individual (Type 1)
Name Mr. Kenneth Tworek
Credential MSW, LSW, CADC
Sex Male
Practice address 4745 Main St Ste 207, Lisle, IL, 60532
Phone (630) 442-1895
Enumeration date Sep 12, 2025
Last updated in NPPES Sep 12, 2025
Taxonomy & licenses
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License CADC-45140 (IL) Secondary
104100000X Social Worker Behavioral Health & Social Service Providers · License 150.117976 (IL) Primary
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.
Frequently asked questions
What specialty is Kenneth Tworek?
Kenneth Tworek is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Angela Young Clinical Social Worker · Lisle, IL NPI 1023550282 Carla Ripley Mental Health Counselor · Lisle, IL NPI 1215412846 Ashley Haraf Social Worker · Lisle, IL NPI 1578126314 Nisha Acharya Mental Health Counselor · Lisle, IL NPI 1447890561 Spencer Schroeder Mental Health Counselor · Lisle, IL NPI 1215544366 Breanna Todd Professional Counselor · Lisle, IL NPI 1902404650 Melissa Stacko Social Worker · Lisle, IL NPI 1396408969 Emily Schumacher Social Worker · Lisle, IL NPI 1720713928
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-12.