91ɫƵ Department of Medicine Administration
Office of the Chair
Kevin R. Regner, MD, MS, FASN
Interim Chair, Professor
Angela DeMent
Interim Department Administrator; Associate Administrator, Operations
Ryan Lamp
Interim Department Administrator; Associate Administrator, Finance
Vice Chairs
Kathryn Flynn, PhD
Professor, Vice Chair for Research
Octavian Ioachimescu, MD, PhD, MBA
Vice Chair for Clinical Research & Data Analytics, Associate Director of Training and Education, Professor
David S. Marks, MD, MBA
Professor of Medicine and Radiology, Vice Chair for Clinical Affairs, Froedtert Hospital Senior Medical Director - Inpatient
Joshua A. Meskin, MD, FACC
Associate Professor; Vice Chair for Ambulatory Operations
Martin Muntz, MD, FACP
Associate Dean, Vice Chair, Professor
Sarah Nickoloff, MD
Associate Professor, Acting Vice Chair for Veteran Affairs
Daniel J. Stein, MD
Director, Associate Professor
Jane N. Wainaina, MD, FACP
Vice Chair, Associate Professor
Division Administrators
Tim Boyle
Division Administrator
General Internal Medicine
Kristi Castello
Division Administrator
Hematology and Oncology
Brenda Lund
Division Administrator
Pulmonary, Critical Care and Sleep Medicine
Jenny Oium
Division Administrator
Gastroenterology and Hepatology; Geriatric and Palliative Medicine
Jason Ruenger
Division Administrator
Cardiovascular Medicine
Jennifer Tyrrell
Division Administrator
Infectious Diseases; Nephrology
Contact Us
Department of Medicine
91ɫƵ
Hub for Collaborative Medicine
8th Floor
8701 Watertown Plank Rd.
Milwaukee, WI 53226
DOMAdmin@mcw.edu