NPPES file of Aug 9, 2026

Jessica Lynn Jandak, PSY.D.

Clinical Neuropsychologist · Downers Grove, IL

Jessica Lynn Jandak, PSY.D. is a clinical neuropsychologist with a practice address in Downers Grove, Illinois, and NPI 1043705130, issued on Jun 29, 2018. Check the license (Illinois 071.010001, as entered in NPPES) 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
1043705130
Name
Jessica Lynn Jandak
Credential
PSY.D.
Primary taxonomy
Clinical Neuropsychologist 103G00000X
License number
071.010001 IL
Self-reported in NPPES; status is on the state search
Practice location
3743 Highland Ave Ste 2001, Downers Grove, IL 60515
Phone
(630) 719-5454
Enumerated
Jun 29, 2018
Record last updated
Jul 29, 2025
Fax
(630) 719-1263
Medicare enrollment
Enrolled (PECOS I20190516002942); accepts Medicare assignment
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 neuropsychologist records → All 248 in Illinois → Look up another NPI →

Also registered at 3743 Highland Ave Ste 2001

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

  1. Jessica Dyrek, LCPCProfessional Counselor1437468436
  2. Whitney JonesPsychiatric/Mental Health Nurse Practitioner1629749817
  3. Melvin Joseph, DOPsychiatry Physician1306474986
  4. Sarah Katula, RN, APNPsychiatric/Mental Health Clinical Nurse Specialist1972818987
  5. Cheryl Long, LCSWClinical Social Worker1285680090
  6. Cynthia Matook, LCSWClinical Social Worker1962458125

Verify Jessica Lynn Jandak 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 071.010001    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

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. Advocate Health And Hospitals CorporationBuffalo Grove, IL

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

Jessica Lynn Jandak among 248 clinical neuropsychologist records in Illinois

Jessica Lynn Jandak, PSY.D. is one of 248 clinical neuropsychologist records with a practice address in Illinois. 35% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 71% of them.

  • NPI issued2018 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 35% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2016 · median 2013 among the 115 with a school on file
  • Record last updated2025 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103G00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Neuropsychologist providers in Illinois

There are 248 clinical neuropsychologist records in Illinois.

All 248 in Illinois → Every provider in Downers Grove → Clinical Neuropsychologist nationwide →

The 8 clinical neuropsychologist records with the nearest ZIP codes

  1. Jan Remer-Osborn, PH.D.Downers Grove, IL 605151275614166
  2. Maribeth Rossini, PHDClarendon Hills, IL 605141962394676
  3. Patricia Andrise, PHDHinsdale, IL 605211669455408
  4. Michael Appleby, PH.D.Hinsdale, IL 605211396725909
  5. Thomas Cothran, PHDHinsdale, IL 605211003197856
  6. Nicole Cruz, PHDHinsdale, IL 605211295069177
  7. Julia DigangiHinsdale, IL 605211639655632
  8. Cynthia Hays, PHDHinsdale, IL 605211467835561

Common questions

What is Jessica Lynn Jandak, PSY.D.'s NPI number?

Jessica Lynn Jandak, PSY.D.'s National Provider Identifier (NPI) is 1043705130, issued on Jun 29, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Jessica Lynn Jandak, PSY.D. located?

The NPPES record lists a practice address at 3743 Highland Ave Ste 2001, Downers Grove, IL, 60515. Phone: (630) 719-5454. Providers update this record themselves, so call before visiting.

How can I verify Jessica Lynn Jandak, PSY.D.'s license?

NPPES lists Illinois license number 071.010001, 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. 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.