Doctor profile · Federal record

Dr. Cassia Zarzuela, M.D.

Pediatrics Physician · Oswego, IL

  • NPI 1700012713
  • 17 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
4789 Route 71
Oswego, IL 605437415
(630) 898-5969
fax (630) 898-5837
Additional location
4440 W 95Th St Ste 2177H
Oak Lawn, IL 604532600
(708) 684-5341
fax (708) 684-4716
Additional location
7600 W College Dr
Palos Heights, IL 604631001
(708) 448-2438
fax (708) 448-2482

Credentials & registration

NPPES · NUCC
NPI registered
June 2009 — 17 yrs on file
Profile last updated
January 11, 2024
Specialty taxonomy
208000000X — NUCC code
State license (1)
Illinois #036123389

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1700012713. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$232
Transactions
13
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
Merck Sharp & Dohme LLC 5 $77.57
Cranial Technologies, INC 2 $27.12
Seqirus USA INC 1 $24.77
GlaxoSmithKline, LLC. 1 $23.43
Sanofi Pasteur INC. 1 $21.75
Boehringer Ingelheim Pharmaceuticals, INC. 1 $20.09
Sobi, INC 1 $20.00
AstraZeneca Pharmaceuticals Lp 1 $17.40

By nature of payment

Food and Beverage
$232

Frequently asked questions

Auto-generated from federal data
What is Dr. Cassia Zarzuela's medical specialty?
Dr. Cassia Zarzuela practices Pediatrics Physician in Oswego, IL.
Where does Dr. Cassia Zarzuela practice?
Dr. Cassia Zarzuela practices at 4789 Route 71, Oswego, IL 605437415. Office phone: 6308985969.
What is Dr. Cassia Zarzuela's NPI?
Dr. Cassia Zarzuela's National Provider Identifier (NPI) is 1700012713, issued by NPPES.