Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Jennifer L. Oles, APN-CNP

Individual provider Family Nurse Practitioner · NPI 1942683800

Mrs. Jennifer L. Oles, APN-CNP is a Nurse Practitioner in Naperville, Illinois. Qualified in 2015, 11 years ago. Practices with Cepamerica Illinois LLP, a 493-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
11
Licensed in
IL
In the registry since
2015
Specialties on file
2
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Practice location Address checks out

552 S Washington St Ste 116
Naperville, IL 60540-6678
Phone: (331) 221-9880
Fax: (331) 221-2336
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2233 W Division St, Chicago, IL 60622-8151 — (312) 770-3524

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 209013368 (IL)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 041387575 (IL)

Record details

NPI number1942683800
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN-CNP
Sole proprietorNo
NPI enumeratedJuly 9, 2015
Last updated in NPPESSeptember 9, 2026
Certification dateSeptember 9, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Cepamerica Illinois Llp — 493 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients91
Services billed 96 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Cepamerica Illinois LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 493 clinicians in the practice; 12 are shown here.

Other providers in Naperville