Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Chijoke H Onyenwenyi, MD

Individual provider Internal Medicine Physician · NPI 1285941153

Dr. Chijoke H Onyenwenyi, MD practises Nephrology in Evergreen Park, Illinois. Qualified in 2002, 24 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
24
Licensed in
IL
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9125 S Pulaski Rd
Evergreen Park, IL 60805-1441
Phone: (708) 422-7715
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 4400 W 95th St Ste 112, Oak Lawn, IL 60453-2657 — (708) 684-7100
  • 16605 107th St, Orland Park, IL 60467-9016 — (708) 226-9860

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 036-129962 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036129962 (IL)

Record details

NPI number1285941153
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 13, 2010
Last updated in NPPESSeptember 20, 2023
Certification dateSeptember 20, 2023

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations8 on file with Medicare

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 patients605
Services billed 2,650 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $120 2 payments · a meal or drink at a meeting or visit, not a fee
Education $19 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Advocate Christ Hospital & Medical Center Hospital · Oak Lawn, IL · listed as Advocate Christ Medical Center
  • Palos Community Hospital Hospital · Palos Heights, IL
  • DaVita Beverly Dialysis Dialysis facility · Chicago, IL · listed as Renal Life Link Inc
  • Fmc - Crestwood Dialysis facility · Crestwood, IL · listed as Dialysis Centers of America - Illinois, Inc
  • Fmc - Oak Forest Dialysis facility · Oak Forest, IL · listed as Fresenius Medical Care Oak Forest, LLC
  • Northwestern Medicine Central Dupage Hospital Hospital · Winfield, IL
  • Osf Little Company Of Mary Medical Center Hospital · Evergreen Park, IL

Colleagues at Advocate Health and Hospitals Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3079 clinicians in the practice; 12 are shown here.

Other providers in Evergreen Park