Patient Care
![David Berger](/patient-care/_images/leadership/berger-david.jpg)
David Berger, M.D., MHCM, FACS
Chief Executive Officer
University Hospital at Downstate
![Wren Lester, Ph.D., CPXP, CPHQ](/patient-care/_images/leadership/wren-lester.png)
Wren Lester, Ph.D., CPXP, CPHQ
Chief Experience Officer
University Hospital at Downstate
![Delphine Mendez de Leon, RN, MBA, MPH](/patient-care/_images/leadership/mendez-de-leon-delphine.jpg)
Delphine Mendez de Leon, RN, MBA, MPH
Chief Strategy Officer
University Hospital at Downstate
![Mohamed (Rami) Nakeshbandi, M.D.](/patient-care/_images/leadership/nakeshbandi-mohamed.jpg)
Mohamed (Rami) Nakeshbandi, M.D.
Chief Quality Officer
University Hospital at Downstate
![Mafuzur Rahman, M.D., FACP](/patient-care/_images/leadership/rahman-mafuzur.jpg)
Mafuzur Rahman, M.D., FACP
Chief Medical Information Officer
University Hospital at Downstate
![Cheryl Rolston, MA, RN, NE-BC](/patient-care/_images/leadership/rolston-cheryl.jpg)
Cheryl Rolston, DNP, MA, RN, NE-BC
Chief Nursing Office
University Hospital at Downstate
![Sean Smith, CPA, FHFMA](/patient-care/_images/leadership/smith-sean.jpg)
Sean Smith, CPA, FHFMA
Chief Financial Officer
University Hospital at Downstate
![Patricia A. Winston, DNP, MS, RN, NEA-BC, FACHE](/patient-care/_images/leadership/winston-pat.jpg)
Patricia A. Winston, DNP, MS, RN, NEA-BC, FACHE
Senior Vice President and Chief Operating Officer
University Hospital at Downstate
![Jameela Yusuff, M.D., MPH, MSHCDL, FACP](/patient-care/_images/leadership/yusuff-jameela.jpg)
Jameela Yusuff, M.D., MPH, MSHCDL, FACP
Chief Medical Officer
University Hospital at Downstate