Medical Center Leadership

​​Meet the ​administration team at RUHS Medical Center.


Zareh Sarrafian, MBA
Assistant County Executive Officer


Vikram Kumar, MD
Chief Medical Information Officer



Jennifer Cruikshank, RN, MBA
Chief Executive Officer



Lekisha Reese
Chief Compliance and Privacy Officer



Arnold Tabuenca, MD
Chief Medical Officer



Daniel Kim, MD
Medical Program Director



Leah Patterson, RN
Chief Nursing Officer & Patient Experience Officer



Raul Coimbra, MD
Surgeon in Chief
Director of Research



Jonelle Morris, RN, BSN, MSN
Chief Operating Officer
Medical Center & Clinics



Melissa Charolla, RN, MHA 
Chief of Ambulatory Care



Joe Zamora
Chief Finance Officer, Riverside University Health System


Nicole Peterson Orr, MBA
Executive Director, Riverside University Health System Foundation



Chief Information Officer