HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / IL

ANDREW R WILLIAMS, MD

EMERGENCY MEDICINE

Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL

Graduated: 2016

NPI: 1275988156

Practice Locations (5)

HUMBOLDT PARK HEALTH EMERGENCY MEDICINE LLC

1044 N FRANCISCO AVE

CHICAGO, IL 606222743

7732928200

ILLINOIS EMERGENCY MEDICINE SPECIALISTS LLC

4646 N MARINE DR

CHICAGO, IL 606405759

7738788700

MERCY HEALTH SYSTEM CORPORATION

875 S ROUTE 31

CRYSTAL LAKE, IL 600148190

7792205500

ROCKFORD HEALTH PHYSICIANS

8201 E RIVERSIDE BLVD

ROCKFORD, IL 611142300

8159712000

MERCY HEALTH SYSTEM CORPORATION

1000 MINERAL POINT AVE

JANESVILLE, WI 535482940

6087566000

Source: CMS National Downloadable File, September 2026.

ANDREW WILLIAMS, MD | HealthCareAtlasUSA