NPPES file of Aug 9, 2026

Olesia Shalayska

Clinical Psychologist · Warrenville, IL

Olesia Shalayska is a clinical psychologist with a practice address in Warrenville, Illinois, and NPI 1558816371, issued on Aug 22, 2016. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1558816371
Name
Olesia Shalayska
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
20042972A IN
Self-reported in NPPES; status is on the state search
Practice location
4320 Winfield RD Ste 200, Warrenville, IL 60555
Phone
(630) 686-8875
Enumerated
Aug 22, 2016
Record last updated
Apr 7, 2026
Fax
(630) 686-5445
Medicare enrollment
Enrolled (PECOS I20180820002153); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 3,947 in Illinois → Look up another NPI →

Also registered at 4320 Winfield RD Ste 200

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

  1. Kaitlyn CahillPhysical Therapist1821654138
  2. Lissa Chleboun, LSWClinical Social Worker1992569065
  3. Kathleen Collier, PTPhysical Therapist1780246652
  4. Sophia Cortes-MorenoCounselor1659828077
  5. Jacqueline DoolittleOccupational Therapist1487290300
  6. Megan Fell, MSED, NCC, LPCMental Health Counselor1710607411

Verify Olesia Shalayska in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Michael Pica PCGeneva, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Olesia Shalayska among 3,947 clinical psychologist records in Illinois

Olesia Shalayska is one of 3,947 clinical psychologist records with a practice address in Illinois. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 71% of them.

  • NPI issued2016 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated2012 · median 2004 among the 1,081 with a school on file
  • Record last updated2026 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in Illinois

There are 3,947 clinical psychologist records in Illinois.

All 3,947 in Illinois → Every provider in Warrenville → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Angela Conway, PSYDWarrenville, IL 605551093010241
  2. Daniel Lee, PSYDWarrenville, IL 605551982616876
  3. Martin Lemon, PH.D.Warrenville, IL 605551063650141
  4. Jason Morris, PSYDWarrenville, IL 605551447529789
  5. Allisun Noe, PSY.D.Warrenville, IL 605551417089988
  6. Kunal Sachdev, PSY.D.Warrenville, IL 605551760881874
  7. Sandra Fallon, PSYDWestern Springs, IL 605581487766127
  8. Anne Guinta, PSY.D.Western Springs, IL 605581093906349

Common questions

What is Olesia Shalayska's NPI number?

Olesia Shalayska's National Provider Identifier (NPI) is 1558816371, issued on Aug 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Olesia Shalayska located?

The NPPES record lists a practice address at 4320 Winfield RD Ste 200, Warrenville, IL, 60555. Phone: (630) 686-8875. Providers update this record themselves, so call before visiting.

How can I verify Olesia Shalayska's license?

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. Medicare files from data.cms.gov. 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.