Our Leadership

Health Services 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.


Nina Park is Interim Chief Executive Officer at Harbor-UCLA Medical Center. Dr. Park currently serves as the Chief Deputy Director for Population Health for DHS. In this role she has oversight of primary care and behavioral health integration, plan partnerships and strategy, data/analytics, CalAIM Enhanced Care Management, the Quality Incentive Program, patient and social support services, among other administrative responsibilities in addition to her ongoing clinical work as a practicing Internal Medicine physician. Dr. Park previously served as the Ambulatory Care Network CEO and CMO for many years and prior to that as the Associate CMO at Olive View-UCLA Medical Center. While she’s serving the interim CEO role at Harbor, she will continue her role as the DHS Chief Deputy Director, Population Health.


Azar Kattan is the Chief Operations Officer for Harbor-UCLA Medical Center. Prior to working at Harbor, she served as the Compliance and Privacy Officer, as well as the Director of Licensing and Accreditation at Olive View-UCLA Medical Center. During her tenure there, she was the administrator for Utilization Management, Environment of Care and the departments of medicine, psychiatry, and emergency medicine. Before working at Olive View, she served as the Director of Operations for Health Services, where she had operational oversight of the Health Services hospitals, contracting, and capital projects.

Ms. Kattan began her career on Capitol Hill working on the House Ways and Means Committee, where she developed health and welfare legislation. She holds a Bachelor of Arts degree from Hamilton College in New York. Ms. Kattan earned her Master’s Degree in Public Health from UCLA School of Public Health and her Juris Doctor from Southwestern Law School.


Jason Black, MBA, DNP, RN is the Chief Nursing Officer at Harbor-UCLA Medical Center. He comes to Harbor-UCLA with over 25 years of experience that has included holding significant leadership roles in nursing, hospital operations, and management consulting. He has served as CNO and/or Chief Operating Officer (COO) at several Southern California hospitals including West Anaheim Medical Center, Hollywood Presbyterian Medical Center and Dignity Health Glendale Memorial Hospital. In these leadership roles and his nearly 10 years of experience in consulting with Deloitte and The Advisory Board, he has dedicated himself to improving quality, efficiency of care, and staff engagement.

Jason received a Bachelor of Science in Nursing from Loma Linda University, a Master of Business Administration in Finance and a Master of Science in Nursing Leadership from the University of Southern California. He also earned a Doctor of Nursing Practice in Educational Leadership from Case Western Reserve University.


Griselda Gutierrez, MD is the Chief Medical Officer at Harbor-UCLA Medical Center. Dr. Gutierrez is an Obstetrician and Gynecologist who has provided over 20 years of distinguished service at Harbor-UCLA that has included holding several important leadership roles. She previously served as Director of the Obstetrics and Gynecology clinics, Chief of the Division of Gynecology, and Interim Chair of the Department of Obstetrics and Gynecology. Since January 2016, Griselda has served as Associate Medical Director of Outpatient Services. In this role, she envisioned and successfully led the strategic transformation of Harbor-UCLA ambulatory care, enabling and facilitating our provider and nursing staff to make significant and necessary improvements in clinical quality, patient experience, and operational efficiency. In addition to leadership, Griselda is an active and accomplished clinician and surgeon, performing complex gynecological operations.

Griselda received a Bachelor of Arts in Psychology from Loyola Marymount University and her medical degree from UCLA-Geffen School of Medicine. She did her internship and residency in Obstetrics & Gynecology here at Harbor-UCLA and was a Fellow in the California Health Care Foundation’s Health Care Leadership Program.