Lily Wilczewski

Lily Wilczewski is a Behavior Analyst provider (Behavior Analyst) practicing in Plainfield, IL, registered in the NPPES registry with NPI 1881339455 since 2022.

✓ Active NPI ✓ Valid NPI checksum

NPI	1881339455
Entity type	Individual (Type 1)
Name	Lily Wilczewski
Sex	Female
Practice address	11914 S ROUTE 59 STE 134, Plainfield, IL, 60585
Phone	8154691500
Enumeration date	2022-04-28
Last updated in NPPES	2023-11-01

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Primary	1-23-68907	IL

Copy-ready billing details

Provider: Lily Wilczewski
NPI: 1881339455
Taxonomy: 103K00000X (Behavior Analyst)
Address: 11914 S ROUTE 59 STE 134, Plainfield, IL, 60585

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1609285840	Meghan Rye	Individual	Behavior Analyst	Plainfield, IL
1205374360	Karen Macella-Intihar	Individual	Behavior Analyst	Plainfield, IL
1952872962	Carly Krzus	Individual	Speech-Language Pathologist	Plainfield, IL
1386285674	Sara Nadeem	Individual	Pediatric Occupational Therapist	Plainfield, IL
1952909343	Samantha Grimm	Individual	Occupational Therapist	Plainfield, IL
1831897719	Alicia Enz	Individual	Physical Therapist	Plainfield, IL
1205516267	Kayla Elstien	Individual	Occupational Therapist	Plainfield, IL
1336919596	Kendall Spreitzer	Individual	Mental Health Counselor	Plainfield, IL

Verify this record

Cross-check NPI 1881339455 against the authoritative CMS record: view Lily Wilczewski on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.

What specialty is Lily Wilczewski?

Lily Wilczewski is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-11-01.