Doctor profile · Federal record

Dr. Nicholas Kowalczyk, MD

Nephrology Physician · Internal Medicine Physician · Student in an Organized Health Care Education/Training Program · Chicago, IL

  • NPI 1598385627
  • 6 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5841 S Maryland Ave Ste Mc7082
Chicago, IL 606371465
(773) 702-6840
fax (773) 702-2230
Mailing address
180 Harvester Dr Ste 110
Burr Ridge, IL 605276686

Credentials & registration

NPPES · NUCC
NPI registered
April 2020 — 6 yrs on file
Profile last updated
June 12, 2023
Specialty taxonomy
207RN0300X — NUCC code
State licenses (2)
Illinois #036.163402 · Illinois #125.075939

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1598385627. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$349
Transactions
5
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Novartis Pharmaceuticals Corporation 2 $232.31
Alexion Pharmaceuticals, Inc. 1 $79.99
Aurinia Pharma U.S., Inc. 1 $21.71
Ardelyx, Inc. 1 $14.93

By nature of payment

Food and Beverage
$269
Education
$80

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
377
Patients
34
Total drug cost
$17,899
Drug Type Claims Patients Total cost
Amlodipine Besylate Generic 62 16 $905
Atorvastatin Calcium Generic 53 18 $1,226
Gabapentin Generic 40 0 $884
Allopurinol Generic 30 0 $430
Levetiracetam Generic 27 0 $813
Montelukast Sodium Generic 27 0 $475
Metoprolol Succinate Generic 25 0 $707
Lisinopril Generic 23 0 $212
Carvedilol Generic 17 0 $375
Triamterene-Hydrochlorothiazid (Triamterene/Hydrochlorothiazid) Brand 15 0 $157

Frequently asked questions

Auto-generated from federal data
What is Dr. Nicholas Kowalczyk's medical specialty?
Dr. Nicholas Kowalczyk practices Nephrology Physician in Chicago, IL.
Where does Dr. Nicholas Kowalczyk practice?
Dr. Nicholas Kowalczyk practices at 5841 S Maryland Ave Ste Mc7082, Chicago, IL 606371465. Office phone: 7737026840.
What is Dr. Nicholas Kowalczyk's NPI?
Dr. Nicholas Kowalczyk's National Provider Identifier (NPI) is 1598385627, issued by NPPES.