Doctor profile · Federal record

Dr. Cassidy Williams, DO

Surgery Physician · Student in an Organized Health Care Education/Training Program · Chicago, IL

  • NPI 1578211140
  • 4 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
600 S Paulina St
Chicago, IL 606123806
(312) 942-7100

Credentials & registration

NPPES · NUCC
NPI registered
March 2022 — 4 yrs on file
Profile last updated
September 20, 2023
Specialty taxonomy
208600000X — NUCC code
State license (1)
Illinois #125.082539

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1578211140. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$496
Transactions
4
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Boston Scientific Corporation 4 $496.15

By nature of payment

Food and Beverage
$496

Frequently asked questions

Auto-generated from federal data
What is Dr. Cassidy Williams's medical specialty?
Dr. Cassidy Williams practices Surgery Physician in Chicago, IL.
Where does Dr. Cassidy Williams practice?
Dr. Cassidy Williams practices at 600 S Paulina St, Chicago, IL 606123806. Office phone: 3129427100.
What is Dr. Cassidy Williams's NPI?
Dr. Cassidy Williams's National Provider Identifier (NPI) is 1578211140, issued by NPPES.