About DHS

about dhs

The Department of Health Services (DHS) is the second largest municipal health system in the nation. Through its integrated system of 19 health centers and four hospitals -- and expanded network of community partner clinics -- DHS annually cares for 670,000 unique patients, employs 19,000 staff, and has an annual operating budget of $4 billion.

DHS provides health services to youth in the juvenile justice system and specialized medical services to children in foster care. Through academic affiliations with the University of Southern California (USC) and the University of California, Los Angeles (UCLA), DHS hospitals are training sites for physicians completing their graduate medical education.

DHS community health initiatives include Housing for Health, a program to build 10,000 supportive housing units for chronically homeless individuals, and Mama’s Neighborhood, a program to reduce preterm births for at-risk moms. Through these and other patient-centered programs and services, DHS strives to improve quality of life for County residents.


Our mission is to ensure access to high-quality, patient-centered, cost-effective health care to Los Angeles County residents through direct services at DHS facilities and through collaboration with community and university partners.


Annual Reports Fast Facts Newsletter

2013 - 2014

2012 - 2013

2011 - 2012

2010 - 2011

Fast Facts is a monthly publication highlighting
news and accomplishments at DHS.

Read current and past issues


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.

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

Hal Yee

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


Christna Ghaly

Christina Ghaly, M.D.
Deputy Director, Strategy & Operations


Greg Polk

Gregory C. Polk
Deputy Director, Administrative Operations
Organizational Chart

Alexander Li

Alexander Li, M.D.
Deputy Director, Care Transitions


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

Anish Mahajan
Anish Mahajan, M.D.
Director,  System Planning

Tangerine Brigham
Tangerine Brigham
Director, Office of Managed Care

Arun Patel
Arun Patel, M.D., JD, MBE
Director , Quality, Patient Safety & Risk Management

Gerardo Pinedo
Gerardo Pinedo
Director, Government Relations & Policy/Facilities Management

Vivian C. Branchick
Vivian C. Branchick, RN, M.S.
Chief Nursing Officer & Director Office of Nursing Affairs

NA Male
Allan Wecker
Chief Financial Officer

Kevin Lynch

Kevin Lynch
Chief Information Officer
Elizabeth Jacobi Elizabeth Jacobi
Director, Human Resources