Doctor profile · Federal record
Dr. Gregory Kozeny, MD
Nephrology Physician · Winfield, IL
- NPI 1861499550
- 21 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
25 N Winfield RD Ste 414
Winfield, IL 601901379
(630) 690-1220
fax (630) 690-5323 - Mailing address
-
120 W 22Nd St Ste 200
Oak Brook, IL 605231563
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- October 30, 2020
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Illinois #036059588
- Medicaid
- IL #036059588
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861499550. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,742
Distinct HCPCS
10
Medicare allowed
$175,776
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 442 | 136 | $81 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 391 | 68 | $51 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 248 | 94 | $52 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 158 | 25 | $362 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 128 | 103 | $47 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 79 | 40 | $123 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 76 | 73 | $179 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 72 | 63 | $77 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 53 | 49 | $135 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 47 | 42 | $87 |
In context: peer comparison
Among 5 peers in Winfield Nephrology Physician, average services per provider: 181. This provider delivers 9.6× the peer median.Open Payments
Industry payments received
All-time total
$70
Transactions
3
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Vifor Pharma, INC. | 3 | $69.56 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
686
Patients
140
Total drug cost
$79,729
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Losartan Potassium | Generic | 81 | 23 | $945 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 67 | 17 | $65,815 |
| Amlodipine Besylate | Generic | 64 | 25 | $912 |
| Furosemide | Generic | 60 | 18 | $553 |
| Bumetanide | Generic | 57 | 16 | $3,163 |
| Carvedilol | Generic | 53 | 15 | $1,174 |
| Spironolactone | Generic | 46 | 15 | $502 |
| Prednisone | Generic | 45 | 11 | $401 |
| Sevelamer Carbonate | Generic | 42 | 0 | $3,712 |
| Lisinopril | Generic | 37 | 0 | $384 |
Frequently asked questions
What is Dr. Gregory Kozeny's medical specialty?
Dr. Gregory Kozeny practices Nephrology Physician in Winfield, IL.
Where does Dr. Gregory Kozeny practice?
Dr. Gregory Kozeny practices at 25 N Winfield RD Ste 414, Winfield, IL 601901379. Office phone: 6306901220.
What is Dr. Gregory Kozeny's NPI?
Dr. Gregory Kozeny's National Provider Identifier (NPI) is 1861499550, issued by NPPES.
What procedures does Dr. Gregory Kozeny commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Chronic care management services (HCPCS 99490); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.