NPPES file of Aug 9, 2026

Caroline Michele Onischak, APRN

Psychiatric/Mental Health Nurse Practitioner · Elgin, IL

Caroline Michele Onischak, APRN is a psychiatric/mental health nurse practitioner with a practice address in Elgin, Illinois, and NPI 1285976936, issued on Mar 20, 2013. Check the license (Illinois 209020867, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1285976936
Name
Caroline Michele Onischak
Credential
APRN
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License numbers
209020867 IL
041.408853 IL
Self-reported in NPPES; status is on the state search
Practice location
1845 Grandstand PL, Elgin, IL 60123
Phone
(847) 695-0484
Enumerated
Mar 20, 2013
Record last updated
Mar 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(847) 695-1436
Medicare enrollment
Enrolled (PECOS I20200506002782); 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 psychiatric/mental health nurse practitioner records → All 1,530 in Illinois → Look up another NPI →

Also registered at 1845 Grandstand PL

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

  1. Leslie AcostaMental Health Counselor1568187706
  2. Michael AgapitoMental Health Counselor1609227677
  3. Phyllis Ahlgrim, LCSWMental Health Counselor1588701890
  4. Franco AlarconCase Manager/Care Coordinator1427438035
  5. Barbara Allen, MAAddiction (Substance Use Disorder) Counselor1922796812
  6. Mercedes Alverio, BAMental Health Counselor1275804049

Verify Caroline Michele Onischak 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 209020867    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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69% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

280 Medicare Part D claims for 23 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. Caroline Onischak280
  2. Specialty average906

Most prescribed

  1. Escitalopram Oxalate29 claims
  2. Bupropion Xl25 claims
  3. Duloxetine Hcl25 claims
  4. Alprazolam23 claims
  5. Desvenlafaxine Succinate Er23 claims
  6. Dextroamphetamine-Amphetamine20 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $574.28

10 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Scientific Affairs, LLC. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Caroline Onischak$574.28
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Rockford Psychiatric Medical Services SCGlenview, IL

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

Caroline Michele Onischak among 1,530 psychiatric/mental health nurse practitioner records in Illinois

Caroline Michele Onischak, APRN is one of 1,530 psychiatric/mental health nurse practitioner records with a practice address in Illinois. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 11% of them.

  • NPI issued2013 · 11% of these records are older, 87% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2019 · median 2021 among the 917 with a school on file
  • Record last updated2020 · 17% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in Illinois

There are 1,530 psychiatric/mental health nurse practitioner records in Illinois.

All 1,530 in Illinois → Every provider in Elgin → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Yolanda Baugh, PMHNP-BCElgin, IL 601231215536479
  2. Suzanne Butler, NPElgin, IL 601231063195931
  3. Ericka Eyas, MSN, PMHNP-BCElgin, IL 601231437827037
  4. Zulmarie Hernandez, CNPElgin, IL 601231518849843
  5. Antonio Hernandez-Silva, PMHNPElgin, IL 601231073371951
  6. Laura MaierElgin, IL 601231366159394
  7. Jasmine Hope PilarioElgin, IL 601231386525525
  8. Brenda Reilly, APNElgin, IL 601231255772471

Common questions

What is Caroline Michele Onischak, APRN's NPI number?

Caroline Michele Onischak, APRN's National Provider Identifier (NPI) is 1285976936, issued on Mar 20, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Caroline Michele Onischak, APRN located?

The NPPES record lists a practice address at 1845 Grandstand PL, Elgin, IL, 60123. Phone: (847) 695-0484. Providers update this record themselves, so call before visiting.

How can I verify Caroline Michele Onischak, APRN's license?

NPPES lists Illinois license number 209020867, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Caroline Michele Onischak, APRN prescribe under Medicare Part D?

In 2024, Caroline Michele Onischak, APRN had 280 Medicare Part D claims for 23 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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.