Doctor profile · Federal record
Dr. Chijoke Onyenwenyi, MD
Nephrology Physician (CMS: Nephrology) · Internal Medicine Physician · Evergreen Park, IL
- NPI 1285941153
- Accepts Medicare
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
9125 S Pulaski RD
Evergreen Park, IL 608051441
(708) 422-7715 - Additional location
-
16605 107Th St
Orland Park, IL 604679016
(708) 226-9860 - Additional location
-
4400 W 95Th St Ste 112
Oak Lawn, IL 604532657
(708) 684-7100
fax (708) 684-7130 - Mailing address
-
120 W 22Nd St Ste 200
Oak Brook, IL 605231563
Credentials & registration
- NPI registered
- September 2010 — 16 yrs on file
- Profile last updated
- September 20, 2023
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State licenses (2)
- Illinois #036-129962 · Illinois #036129962
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285941153. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,564
Distinct HCPCS
10
Medicare allowed
$324,369
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
Q9967 |
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 700 | 11 | $0 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 580 | 184 | $82 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 424 | 130 | $124 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 213 | 141 | $108 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 161 | 28 | $365 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 101 | 94 | $180 | |
J2250 |
Injection, midazolam hydrochloride, per 1 mg | 57 | 45 | $0 | |
36902 |
Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | 55 | 50 | $1,268 | |
J3010 |
Injection, fentanyl citrate, 0.1 mg | 46 | 40 | $1 | |
75710 |
Review by radiologist of arm or leg artery image | 42 | 35 | $161 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 130. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$203
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Travere Therapeutics, Inc. | 1 | $124.90 | |
| Otsuka America Pharmaceutical, Inc. | 2 | $48.25 | |
| Ardelyx, Inc. | 1 | $29.66 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
855
Patients
231
Total drug cost
$90,990
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Carvedilol | Generic | 101 | 33 | $1,048 |
| Hydrochlorothiazide | Generic | 97 | 28 | $610 |
| Losartan Potassium | Generic | 95 | 28 | $1,406 |
| Allopurinol | Generic | 80 | 26 | $1,091 |
| Hydralazine Hcl | Generic | 72 | 20 | $1,252 |
| Furosemide | Generic | 71 | 27 | $413 |
| Atorvastatin Calcium | Generic | 68 | 25 | $522 |
| Amlodipine Besylate | Generic | 50 | 17 | $647 |
| Lisinopril | Generic | 46 | 14 | $314 |
| Potassium Chloride | Generic | 38 | 13 | $892 |
Hospital affiliations
Frequently asked questions
What is Dr. Chijoke Onyenwenyi's medical specialty?
Dr. Chijoke Onyenwenyi practices Nephrology Physician in Evergreen Park, IL.
Where does Dr. Chijoke Onyenwenyi practice?
Dr. Chijoke Onyenwenyi practices at 9125 S Pulaski RD, Evergreen Park, IL 608051441. Office phone: 7084227715.
What is Dr. Chijoke Onyenwenyi's NPI?
Dr. Chijoke Onyenwenyi's National Provider Identifier (NPI) is 1285941153, issued by NPPES.
Does Dr. Chijoke Onyenwenyi accept Medicare assignment?
Yes. Dr. Chijoke Onyenwenyi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chijoke Onyenwenyi commonly perform?
Top Medicare-reported procedures in 2023: Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.