People of the Medical College of Wisconsin Collaborative for Healthcare Delivery Science (CHDS)
Leadership
![headshot](/-/media/MCW/Departments/Center-for-Advancing-Population-Science/Ann-Nattinger_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Ann B. Nattinger, MD, MPH
Associate Provost for Research; Senior Associate Dean for Research, School of Medicine; Professor of Medicine, Lady Riders Professor of Breast Cancer Research; Principal Investigator, CHDS
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Liliana E. Pezzin, PhD, JD
Professor, Institute for Health & Equity; Executive Director, Collaborative for Healthcare Delivery Science
![headshot](https://opd-resources.mcw.edu/OPD-File-Library/Provider-Photos/Singh_Sid.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Siddhartha Singh, MD, MS, MBA
Chief Quality Officer, Froedtert Hospital & Medical College of Wisconsin Physicians; Associate Dean of Quality; Professor of Medicine
Faculty
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Bradley H. Crotty, MD, MPH, FACP, FAMIA
Associate Professor, Medicine (General Internal Medicine)
![headshot](/-/media/MCW/Departments/Center-for-Advancing-Population-Science/Faculty/Yilu-Bill-Dong_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Yilu "Bill" Dong, PhD
Yilu ‘Bill’ Dong: Assistant Professor, Pediatrics; CHDS economist
![headshot](https://opd-resources.mcw.edu/OPD-File-Library/Provider-Photos/Fletcher_Kathlyn.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Kathlyn E. Fletcher, MD
Professor
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Purushottam W. Laud, PhD
Professor, Biostatistics
![headshot](/-/media/MCW/Departments/Surgery/Surgical-Oncology/People/Muska-Nataliansyah_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Mochamad (Muska) M. Nataliansyah, MD, MPH, PhD
Assistant Professor of Surgery; CHDS implementation scientist
![headshot](/-/media/MCW/Departments/Center-for-Advancing-Population-Science/Faculty/Melek-Somai_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Melek Somai, MD, MPH
Assistant Professor of Medicine; CHDS computer scientist
![headshot](/-/media/MCW/Departments/Biostatistics/People/Rodney-Sparapani_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Rodney Sparapani, PhD
Associate Professor, Biostatistics
Staff
![headshot](/-/media/MCW/Departments/Medicine/Cardiovascular-Medicine/Faculty-and-Staff/Amy-Blair_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
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Ryan Hanson, MS
Data Scientist
![headshot](/-/media/MCW/Departments/Center-for-Advancing-Population-Science/Emily-McGinley_Academic-Profile.jpg?w=200&h=275&mode=crop&anchor=middlecenter&scale=both 200w)
Contact Us
Collaborative for Healthcare Delivery Science (CHDS)
Medical College of Wisconsin
8701 Watertown Plank Rd.
Milwaukee, WI 53226
![Medical College of Wisconsin Google map location](/-/media/MCW/Common/Google-Maps/location430435866880211208zoom13.png?w=600&h=450&mode=crop)