Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexia Diaz De Leon, LCSW

Clinical Social Worker in Elgin, IL · enumerated 2019.

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

National Provider Identifier

1063061521

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alexia Diaz De Leon

Credential LCSW

Sex Female

Practice address 1845 Grandstand Pl, Elgin, IL, 60123

Phone (847) 695-5496

Enumeration date Sep 8, 2019

Last updated in NPPES Mar 4, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 150.106545 (IL) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149.028586 (IL) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

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 Alexia Diaz De Leon?

Alexia Diaz De Leon is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Daphne Sandouka Mental Health Counselor · Elgin, IL NPI 1275629263 Annie Kot Clinical Social Worker · Elgin, IL NPI 1972693133 Caroline Bailey Mental Health Counselor · Elgin, IL NPI 1699811091 Joan Schneider-Cooper Mental Health Counselor · Elgin, IL NPI 1992842231 Eva Sagin-Kurilo Psychiatry Physician · Elgin, IL NPI 1558408781 Phyllis Ahlgrim Mental Health Counselor · Elgin, IL NPI 1588701890 Deborah Mcguire Clinical Social Worker · Elgin, IL NPI 1457498354 Alicia Martin Psychiatry Physician · Elgin, IL NPI 1578600482

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-04.