Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Caroline Michele Onischak, APRN

Psychiatric/Mental Health Nurse Practitioner in Elgin, IL · enumerated 2013.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285976936

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Registry record

Entity type Individual (Type 1)

Name Ms. Caroline Michele Onischak

Credential APRN

Sex Female

Practice address 1845 Grandstand Pl, Elgin, IL, 60123

Phone (847) 695-0484

Fax (847) 695-1436

Enumeration date Mar 20, 2013

Last updated in NPPES Mar 10, 2020

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 041.408853 (IL) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209020867 (IL) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Caroline Onischak?

The National Provider Identifier (NPI) for Caroline Onischak is 1285976936, a Type 1 (individual) record in the CMS NPPES registry.

Where does Caroline Onischak practice?

The practice location on file with NPPES is in Elgin, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Daphne Sandouka Mental Health Counselor · Elgin, IL NPI 1275629263 Annie Kot Clinical Social Worker · Elgin, IL NPI 1972693133 Caroline Bailey Mental Health Counselor · Elgin, IL NPI 1699811091 Joan Schneider-Cooper Mental Health Counselor · Elgin, IL NPI 1992842231 Eva Sagin-Kurilo Psychiatry Physician · Elgin, IL NPI 1558408781 Phyllis Ahlgrim Mental Health Counselor · Elgin, IL NPI 1588701890 Deborah Mcguire Clinical Social Worker · Elgin, IL NPI 1457498354 Alicia Martin Psychiatry Physician · Elgin, IL NPI 1578600482

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-10.