PHC Executive Team

Liz Gibboney, Chief Executive Officer​

Liz is responsible for the development and general management Partnership HealthPlan of California (PHC). She leads the successful operations of the health plan and all related programs, as well as being leader of the Executive Team.

Prior to becoming CEO in July 2015, Liz served for eight years as deputy CEO and chief operating officer at PHC. She was integral in PHC's expansions from serving one county in 1994 to the 14 served by PHC today.

Before coming to PHC in 1994, Liz worked for Sutter Preferred Health Plans/Omni Health Plan.

Liz received a master's in communication studies from California State University, Sacramento. She has a bachelor's degree in rhetoric and communication from UC Davis. 



Sonja Bjork, Deputy Chief Executive Officer / Chief Operating Officer

Sonja is responsible for the oversight of operations and executive management of PHC regional offices and several departments: Health Services (Utilization Management, Care Coordination, and Population Health Management), Member Services, Claims, and Configuration. Sonja provides leadership in organizing our operational teams and interdepartmental communications, and participates in strategic planning in the development of new business lines and programs. She enjoys working with PHC's Consumer Advisory Committees and is proud of PHC's work to promote access to care through provider recruitment and workforce development.

Before joining PHC, Sonja worked as a dependency attorney representing youth in the child welfare system and advocated for low-income Solano County residents.

Sonja received a juris doctorate from UC Berkeley School of Law. She has a bachelor of arts degree in sociology with a concentration in analysis and research (CARR) from University of Wisconsin, Madison.


Dr. Robert Moore, M.D., MPH, Chief Medical Officer 

Dr. Robert Moore is responsible for the appropriateness and quality of health care delivered through PHC. He leads and oversees PHC's team of medical directors and keeps staff and providers informed and up to date on changing health regulations and guidance.

Before joining PHC, Dr. Moore was chief medical officer at Clinic Ole Community Health and Redwood Community Health Coalition.

Dr. Moore received a doctorate of medicine at UCSF. He has a master's of public health from Columbia University, a master's of business administration from Western Governors University, and a bachelor's degree in biochemistry from UC Berkeley. He completed his family medicine residency at Ventura County Medical Center.  




​Patti McFarland, Chief Financial Officer

Patti is responsible for directing the financial activities of PHC in a manner that anticipates and supports current and future organizational objectives. She is responsible for the day-to-day operations of financial reporting, purchasing, budgeting, financial analysis, and decision support as well as the continuous improvement of these departments. She also oversees Administrative Services (reception, mailroom, and fulfillment), workplace and facility management, ergonomics, and employee purchasing/acquisition.

Before joining PHC, Patti served as chief financial officer at two other health plans, CalOptima and Central California Alliance for Health. Patti received a bachelor of science in Accounting from Arizona State University.





Regina Littlefield, Senior Director of Human Resources

Regina is responsible for the overall direction of Human Resources while ensuring efficient operations, compliance with policies and procedures, and achievement of organizational goals and objectives. She provides leadership in the planning and execution of performance management, education, and training and development programs. She presents to the Board of Commissioners on the Employee Engagement Survey and to the Personnel Committee on HR Policies and Procedures that have financial impact on the organization.

Regina started at PHC in 2000 and rose through the ranks of Human Resources, serving as manager, associate director, and director before becoming senior director. Prior to joining PHC, Regina served as an HR representative for Parsons Transportation Group where she supported the benefit and payroll administration for the western regional office. 





Wendi West, Northern Region Executive Director

Wendi oversees the operations of PHC's Northern Region and represents PHC with community agencies, providers, and elected officials in the region. She manages staff in the Redding and Eureka offices and works with executive leadership to assure awareness of the region's needs, while also promoting the interests and values of PHC within the region.

Prior to her current role at PHC, Wendi served as the Northern Region claims director. Before joining PHC, Wendi was a Northern California executive director of revenue cycle at Adventist Health System/Cerner Corp. Prior to that, Wendi was the Northern California director of revenue cycle at Kaiser Permanente and CHW/Dignity.

Wendi received a master's in health care administration from St. Joseph's College of Maine. She has a bachelor's degree in political science and economics from Chico State University. 


Kirt Kemp, Chief Information Officer

Kirt is responsible for the creation and implementation of our IT Strategic Plan. He also provides leadership to all IT initiatives in support of PHC's business and strategic objectives, and ensures that all IT resources are aligned to meet PHC's organizational priorities.

Before joining PHC, Kirt was a chief information officer at Long Term Care Group and Corporate Benefit Services of America. Kirt has built a solid foundation through his prior advisory services managing all aspects of IT, administering all provider pricing and contracting applications, and configuration systems.

Kirt received a MBA with an emphasis in health care administration and bachelor's degree in computer science from Westminster College Salt Lake City.




​Amy Turnipseed, Chief Strategy & Government Affairs Officer

Amy is responsible for the operations and executive management of the following departments: Regulatory Affairs and Compliance (RAC); Grievance and Appeals; Communications; Legal; Provider Relations; and Operational Excellence/Project Management Office. She also serves as compliance officer, and presents to the Board of Commissioners on compliance issues, including maintenance of the health plan's Compliance Plan and annual Risk Analysis.

Before joining PHC, Amy was a senior consultant at Harbage Consulting, where she served as project manager for California's Coordinated Care Initiative. In this capacity, she supported policy development and execution, and facilitated meetings with state department leaders, advocates and consumers.

Amy received a master's in public administration from the University of Southern California, with an emphasis in political management. She has a bachelor's degree in history and political science from Gonzaga University.


Mark Bontrager, Behavioral Health Administrator 

Mark is responsible for oversight and management of PHC activities involving behavioral health (mental health and substance use) services and community projects that support access to and improvement of behavioral health. He also works with PHC leadership, member counties, providers, and the community to develop the health plan's approach to behavioral health services.

Before moving into his current role, Mark was director of regulatory affairs and program development for PHC. Prior to coming to PHC, he was executive director of Aldea Children and Family Services. Bontrager also has worked as a private practice attorney and held multiple positions at the Villages of Indiana Inc.

Mark earned a juris doctor degree from the Indiana University School of Law and a master's of social work from the Indiana University School of Social Work.