NPPES file of Aug 9, 2026

Leslie Diaz, RBT

Behavior Technician · Downers Grove, IL

Leslie Diaz, RBT is a behavior technician with a practice address in Downers Grove, Illinois, and NPI 1457282378, issued on May 28, 2026. Check the license (Illinois RBT-26-512465, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1457282378
Name
Leslie Diaz
Credential
RBT
Primary taxonomy
Behavior Technician 106S00000X
License number
RBT-26-512465 IL
Self-reported in NPPES; status is on the state search
Practice location
2901 Finley RD Ste 102, Downers Grove, IL 60515
Phone
(317) 520-4748
Enumerated
May 28, 2026
Record last updated
May 28, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest behavior technician records → All 9,340 in Illinois → Look up another NPI →

Also registered at 2901 Finley RD Ste 102

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jana AbdullahOccupational Therapist1518732601
  2. Diamond Alexander, RBTBehavior Technician1750220711
  3. Colleen Allen, M.S., BCBABehavior Analyst1801303565
  4. Sarah Alter, MS, OTR/LPediatric Occupational Therapist1518462977
  5. Ann BednarBehavior Analyst1932603164
  6. Madeline BoltinBehavior Analyst1972041960

Verify Leslie Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license RBT-26-512465    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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Leslie Diaz among 9,340 behavior technician records in Illinois

Leslie Diaz, RBT is one of 9,340 behavior technician records with a practice address in Illinois. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2026, is newer than 83% of them.

  • NPI issued2026 · 83% of these records are older, 0% newer
  • In a Medicare fileNo · under 1% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2026 · 24% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106S00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

30 behavior technician records list a practice address in Downers Grove

They are 30 of the 1,899 NPPES records with a practice address in Downers Grove, and 9,340 behavior technician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 9,340 in Illinois → Every provider in Downers Grove → Behavior Technician nationwide →

The 8 behavior technician records with the nearest ZIP codes

  1. Ashley EspinoDowners Grove, IL 605151730829185
  2. Patricia Gil, RBTDowners Grove, IL 605151245103233
  3. Siobhan HerreboutDowners Grove, IL 605151508655879
  4. Jennifer KlemzDowners Grove, IL 605151134706435
  5. Maleeha LongiDowners Grove, IL 605151760373765
  6. Cindy Maciel, RBTDowners Grove, IL 605151780557108
  7. Alison MulvoyDowners Grove, IL 605151861382426
  8. Nina O'Connell, RBT-18-49249Downers Grove, IL 605151730679796

Common questions

What is Leslie Diaz, RBT's NPI number?

Leslie Diaz, RBT's National Provider Identifier (NPI) is 1457282378, issued on May 28, 2026. An NPI identifies a provider in billing; it is not a license.

Where is Leslie Diaz, RBT located?

The NPPES record lists a practice address at 2901 Finley RD Ste 102, Downers Grove, IL, 60515. Phone: (317) 520-4748. Providers update this record themselves, so call before visiting.

How can I verify Leslie Diaz, RBT's license?

NPPES lists Illinois license number RBT-26-512465, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.