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 / WI

WILLIAM TILLIS, MD

PULMONARY DISEASE

Medical school: UNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)

Graduated: 1986

Also: INTERNAL MEDICINE

NPI: 1669468377

Practice Locations (1)

MERCY HEALTH SYSTEM CORPORATION

N2950 STATE RD, SUITE 67

LAKE GENEVA, WI 531472655

2622450535

Source: CMS National Downloadable File, September 2026.

WILLIAM TILLIS, MD | HealthCareAtlasUSA