Patrick O'Brien, MD, is board-certified in internal medicine and earned his medical degree from the University of Wisconsin. He received cardiology training as a cardiology fellow at the Medical College of Wisconsin in Milwaukee, where he also completed his residency.


Univ of Wisconsin Med School
Med College of WI Affiliated H
Med College of WI Affiliated H


Hospital Affiliations
Ascension St Elizabeth Hospital - WI
Ascension Calumet Hospital - WI
Ascension Mercy Hospital - WI
Ascension St Elizabeth Hospital Surgery Center
Why Ascension
Ascension doctors are committed to getting to know you. They take time for real back-and-forth conversations with you so they can understand all aspects of you and your life. Because great care starts with seeing your whole picture.
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