Doctor profile · Federal record

Dr. Zachary Warren, MD

Otolaryngic Allergy Physician (CMS: Otolaryngology) · Otolaryngology Physician · Otolaryngology Physician · Chicago, IL

  • NPI 1669933222
  • Accepts Medicare
  • 7 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5841 S Maryland Ave # Mc1035
Chicago, IL 606371443
(773) 702-1865
fax (773) 834-3888
Mailing address
180 Harvester Dr Ste 110
Burr Ridge, IL 605276686

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
September 18, 2024
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207YX0602X — NUCC code
State licenses (2)
Georgia #100647 · Illinois #125.075059

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1669933222. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$2,507
Transactions
15
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Stryker Corporation 14 $2,443.11
Inspire Medical Systems, INC. 1 $63.87

By nature of payment

Travel and Lodging
$2,102
Food and Beverage
$405

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
37
Patients
13
Total drug cost
$187
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 13 13 $91
Famotidine Generic 12 0 $55
Omeprazole Generic 12 0 $40

Frequently asked questions

Auto-generated from federal data
What is Dr. Zachary Warren's medical specialty?
Dr. Zachary Warren practices Otolaryngic Allergy Physician in Chicago, IL.
Where does Dr. Zachary Warren practice?
Dr. Zachary Warren practices at 5841 S Maryland Ave # Mc1035, Chicago, IL 606371443. Office phone: 7737021865.
What is Dr. Zachary Warren's NPI?
Dr. Zachary Warren's National Provider Identifier (NPI) is 1669933222, issued by NPPES.
Does Dr. Zachary Warren accept Medicare assignment?
Yes. Dr. Zachary Warren accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.