DHS is led by a talented and experienced executive team that is committed to sustaining a high performing health care system that is responsive to the needs of County residents.

DHS Organizational Chart


Mitchell H. Katz
Mitchell H. Katz, M.D

Hal Yee

Hal F. Yee, Jr., M.D., Ph.D.
Chief Medical Officer


Christina Ghaly

Christina Ghaly, M.D.
Chief Operations Officer


Greg Polk

Gregory C. Polk
Chief Deputy, Administration and Capital Planning
Organizational Chart

Nina Park
Nina J. Park, M.D.
Director,  Ambulatory Care Network
Mark Ghaly
Mark Ghaly, M.D.
Director,  Community Health & Integrated Programs

Gerardo Pinedo

Gerardo Pinedo, J.D.
Director, Strategic Operations
Enterprise Health Information Management
Facilities Management Division
Communications, Commissions, Workplace Programs
Legislative Affairs and Audit Committee Response
Michael Owens
Michael Owens, M.D.
Interim Director and Chief Medical Officer, Managed Care Services

Arun Patel
Arun Patel, M.D., J.D., M.B.E.
Director, Quality, Patient Safety and Risk Management

Susan Currin
Susan Currin, RN.
Chief Nursing Officer and Director, Office of Nursing Affairs

NA Male
Allan Wecker
Chief Financial Officer

Kevin Lynch

Kevin Lynch
Chief Information Officer
Elizabeth Jacobi

Elizabeth Jacobi, J.D.
Director, Human Resources