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Doctors / IL

SEAN W MARQUIS, MD

EMERGENCY MEDICINE

Graduated: 2009

NPI: 1053554089

Practice Locations (2)

MERCY HEALTH SYSTEM CORPORATION

901 GRANT ST

HARVARD, IL 600331821

8159435431

MERCY HEALTH SYSTEM CORPORATION

1000 MINERAL POINT AVE

JANESVILLE, WI 535482940

6087566000

Source: CMS National Downloadable File, September 2026.

SEAN MARQUIS, MD | HealthCareAtlasUSA