MS. CAROLINE MICHELE ONISCHAK APRN
NPI 1285976936
Nurse Practitioner - Psychiatric/Mental Health in Elgin, IL
About Ms. Caroline Michele Onischak Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. CAROLINE MICHELE ONISCHAK APRN (NPI 1285976936) is an individual psychiatric/mental health provider in Elgin, Illinois, licensed in Illinois (209020867) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Caroline Michele Onischak Aprn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Caroline Onischak reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Streamwood, IL 60107
- Reassigned Medicare billing, Illinois enrollment
- 33 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- 36 clinicians in this Medicare group
Rockford, IL 61107
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rockford Psychiatric Medical Services Sc
- 163 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Caroline Onischak's NPI number?
The NPI number for Caroline Onischak is 1285976936. It was assigned to this individual provider in the NPPES registry on March 20, 2013.
Where is Caroline Onischak located?
Caroline Onischak practices at 1845 Grandstand Pl, Elgin, IL 60123. The listed phone number is (847) 695-0484.
What is Caroline Onischak's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Caroline Onischak enrolled in Medicare?
Yes. Caroline Onischak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Caroline Onischak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Onischak reassigns Medicare benefits to 3 organizations: Bhc Streamwood Hospital Inc. (Streamwood, IL), Tms Clinical Services PLLC (Oak Brook, IL) and Rockford Psychiatric Medical Services, S.C. (Rockford, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Caroline Onischak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Caroline Onischak accept?
Health plans from MercyCare, MercyCare Health Plans, Oscar Health and Quartz list Caroline Onischak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Caroline Onischak was last updated on March 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Caroline Michele Onischak, APRN · NPI 1285976936
Psychiatric/Mental Health physician in Elgin, Illinois. Individual provider, active in the CMS NPPES registry since March 20, 2013.
## Identity
- **NPI:** 1285976936 (Entity type: Individual)
- **Enumerated:** March 20, 2013
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 209020867 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1845 GRANDSTAND PL, Elgin, IL 60123-4983
- **Phone:** (847) 695-0484 · **Fax:** (847) 695-1436
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Bhc Streamwood Hospital Inc. (NPI 1619916822, Streamwood, IL); Tms Clinical Services PLLC (NPI 1285273540, Oak Brook, IL); Rockford Psychiatric Medical Services, S.C. (NPI 1821391442, Rockford, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** March 10, 2020
---
Source: [NPI Profile](https://npiprofile.com/npi/1285976936) · Data from the CMS NPPES public registry.