Chidinma Nnenna Ekenna, M.D.
NPI 1659750743ActiveIndividual· Internal Medicine, Nephrology· Olympia Fields, IL
Internal Medicine, Nephrology (M.D.) with Kidney Care Center Olympia Fields LLC, practicing in Olympia Fields, Illinois. In 2024 Medicare paid $172,535 for 380 patients, and Part D covered 408 of their prescriptions, 84% of them generic. Novo Nordisk Inc was the largest of 17 companies reporting payments in 2025, $998.42 in all, mostly food and beverage. Lists Advocate Christ Hospital & Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1659750743 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 22, 2015 |
| Last updated in NPPES | Feb 17, 2026 |
| Certified by provider | Feb 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036153267 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 380 |
|---|---|
| Services billed | 1,886 across 24 procedure codes |
| Paid by Medicare | $172,535 |
Part D prescriptions in 2024
| Prescriptions (claims) | 408 · 687 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $70,652 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Kidney Care Center Olympia Fields LLCOlympia Fields, IL · 6 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Advocate Trinity HospitalChicago, IL
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL
- Ingalls Memorial HospitalHarvey, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Dcc - Olympia FieldsDialysis facility · Olympia Fields, IL
- Davita Calumet City DialysisDialysis facility · Calumet City, IL
- Davita Country Hills DialysisDialysis facility · Country Club Hills, IL
- Davita Olympia Fields Dialysis CenterDialysis facility · Matteson, IL
Industry payments (Open Payments)
- 2025$998.42 · 41 payments from 17 companies
- 2024$431.38 · 15 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $190.07 | 5 |
| Amgen Inc. | $153.36 | 7 |
| Bayer Healthcare Pharmaceuticals Inc. | $112.24 | 5 |
| Ardelyx, Inc. | $101.54 | 4 |
| Astrazeneca Pharmaceuticals LP | $56.53 | 3 |
What the 2025 payments were for
- Food and Beverage$978.20 · 40 payments
- Education$20.22 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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