Doctor profile · Federal record

Dr. Thirumazhisai Gunasekaran

Pediatric Gastroenterology Physician · Park Ridge, IL

  • NPI 1083651749
  • 20 yrs on file
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1675 Dempster St, 3Rd Floor
Park Ridge, IL 600681110
(847) 723-7700

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
May 7, 2021
Specialty taxonomy
2080P0206X — NUCC code
State license (1)
Illinois #036084748
Medicaid
IL #036084748

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1083651749. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$5,915
Transactions
12
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Regeneron Pharmaceuticals, Inc. 3 $5,263.50
GENZYME CORPORATION 5 $322.84
Regeneron Healthcare Solutions, Inc. 3 $225.40
Alcresta Therapeutics, Inc. 1 $103.59

By nature of payment

Consulting Fee
$5,148
Food and Beverage
$767

Frequently asked questions

Auto-generated from federal data
What is Dr. Thirumazhisai Gunasekaran's medical specialty?
Dr. Thirumazhisai Gunasekaran practices Pediatric Gastroenterology Physician in Park Ridge, IL.
Where does Dr. Thirumazhisai Gunasekaran practice?
Dr. Thirumazhisai Gunasekaran practices at 1675 Dempster St, Park Ridge, IL 600681110. Office phone: 8477237700.
What is Dr. Thirumazhisai Gunasekaran's NPI?
Dr. Thirumazhisai Gunasekaran's National Provider Identifier (NPI) is 1083651749, issued by NPPES.