Tatiana Diaz

Tatiana Diaz is a Behavior Analyst provider (Behavior Analyst) practicing in Willowbrook, IL, registered in the NPPES registry with NPI 1801456926 since 2019.

✓ Active NPI ✓ Valid NPI checksum

NPI	1801456926
Entity type	Individual (Type 1)
Name	Tatiana Diaz
Sex	Female
Practice address	6300 KINGERY HWY STE 102, Willowbrook, IL, 60527
Phone	8154691500
Enumeration date	2019-06-20
Last updated in NPPES	2025-11-20

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Primary	1-20-46201	—

Copy-ready billing details

Provider: Tatiana Diaz
NPI: 1801456926
Taxonomy: 103K00000X (Behavior Analyst)
Address: 6300 KINGERY HWY STE 102, Willowbrook, IL, 60527

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1023258449	Nicole Clarizio	Individual	Mental Health Counselor	Willowbrook, IL
1649587569	Jason Wetherbee	Individual	Behavior Analyst	Willowbrook, IL
1366961088	Ashley Ballard	Individual	Behavior Analyst	Willowbrook, IL
1104320605	Nicole Craggs	Individual	Behavior Analyst	Willowbrook, IL
1376032086	Elizabeth Pawlowski	Individual	Behavior Technician	Willowbrook, IL
1780161661	Diana Grace	Individual	Behavior Analyst	Willowbrook, IL
1962976910	Nico Crockett	Individual	Behavior Technician	Willowbrook, IL
1629625769	Mary Smyers-Karaffa	Individual	Speech-Language Pathologist	Willowbrook, IL

Verify this record

Cross-check NPI 1801456926 against the authoritative CMS record: view Tatiana Diaz 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

What specialty is Tatiana Diaz?

Tatiana Diaz 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.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-11-20.