Doctor profile · Federal record

Dr. Caroline Onischak, APRN

Psychiatric/Mental Health Nurse Practitioner (CMS: Nurse Practitioner) · Adult Psychiatric/Mental Health Registered Nurse · Elgin, IL

  • NPI 1285976936
  • Accepts Medicare
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1845 Grandstand Pl
Elgin, IL 601234983
(847) 695-0484
fax (847) 695-1436

Credentials & registration

NPPES · NUCC
NPI registered
March 2013 — 13 yrs on file
Profile last updated
March 10, 2020
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
363LP0808X — NUCC code
State licenses (2)
Illinois #209020867 · Illinois #041.408853

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1285976936. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$574
Transactions
10
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
Janssen Scientific Affairs, LLC 3 $355.66
Alkermes, INC. 1 $99.00
Lundbeck LLC 3 $63.52
Neos Therapeutics, Lp 1 $23.82
Tempus Ai, INC 1 $16.19
Almatica Pharma LLC 1 $16.09

By nature of payment

Food and Beverage
$574

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
85
Patients
0
Total drug cost
$2,212
Drug Type Claims Patients Total cost
Bupropion Xl (Bupropion Hcl) Brand 26 0 $430
Dextroamphetamine-Amphetamine (Dextroamphetamine/Amphetamine) Brand 23 0 $867
Mirtazapine Generic 21 0 $142
Duloxetine Hcl Generic 15 0 $773

Frequently asked questions

Auto-generated from federal data
What is Dr. Caroline Onischak's medical specialty?
Dr. Caroline Onischak practices Psychiatric/Mental Health Nurse Practitioner in Elgin, IL.
Where does Dr. Caroline Onischak practice?
Dr. Caroline Onischak practices at 1845 Grandstand Pl, Elgin, IL 601234983. Office phone: 8476950484.
What is Dr. Caroline Onischak's NPI?
Dr. Caroline Onischak's National Provider Identifier (NPI) is 1285976936, issued by NPPES.
Does Dr. Caroline Onischak accept Medicare assignment?
Yes. Dr. Caroline Onischak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.