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Margaret Tatar
Chief Executive Officer

Margaret Tatar joined Gold Coast Health Plan in 2019 with more than 30 years of public and private sector experience in managed care program and policy development, health policy, program development, advocacy, and government / legislative affairs. Under the direction of the Ventura County Medi-Cal Managed Care Commission, Ms. Tatar is responsible for all aspects of the Plan’s operations including board, regulatory and community relations and is tasked with ensuring that GCHP fulfills its mission to provide access to high-quality care and services to members.

Ms. Tatar has a strong track record in managed care plan leadership and has led large-scale managed care initiatives and multi-disciplinary teams in complex operating environments. She has served in the federal government’s Health Care Financing Administration (HCFA), the executive and legislative branches in Colorado and California, and held a key leadership position with CalOptima, the County Organized Health System in Orange County. As acting deputy director of delivery systems for the state Department of Health Care Services (DHCS), Ms. Tatar was responsible for the network of 23 contracted health plans that deliver health care services to more than nine million Californians.

Since 2014, Ms. Tatar has been a managing principal at Health Management Associates, a Michigan-based health care research and consulting firm. It is in that capacity that she serves as CEO at GCHP.

Kashina Bishop
Chief Financial Officer

As chief financial officer, Kashina Bishop is responsible for overseeing all fiscal responsibilities for the Plan and ensuring that the annual budget is monitored and established in alignment with the overall mission and strategic plan.

Ms. Bishop joined GCHP in 2018 with more than 15 years of experience in financial services, including 10 years at CenCal Health, a managed care organization serving Medi-Cal members in Santa Barbara and San Luis Obispo counties. There, she served as controller and then director of finance. Prior to joining CenCal, she worked as a certified public accountant (CPA) at an accounting firm in Santa Barbara.

Ms. Bishop earned a Bachelor of Arts in Environmental Science from the University of California, Santa Barbara. She is a CPA and a Certified Healthcare Financial Professional.

Nancy R. Wharfield, MD
Chief Medical Officer

Dr. Nancy R. Wharfield joined GCHP in 2011 and is responsible for providing the Plan with the strategic direction, oversight and evaluation of its medical programs. She provides medical leadership and management in the areas of quality improvement, utilization management, pharmacy benefits, care management, disease management and health education.

Prior to joining GCHP, Dr. Wharfield served as physician executive at CenCal Health, where she was responsible for utilization management, case review and policy and guideline development. At WellPoint, Inc., she served as a physician adviser and worked on all state-sponsored business, including Medi-Cal.

Dr. Wharfield earned a Bachelor of Arts in Sociology from University of California, Santa Barbara and her medical degree from University of California, Los Angeles.

Theodore Bagley
Chief Diversity Officer

Theodore Bagley is the chief diversity officer at GCHP. Mr. Bagley is responsible for all aspects of the Plan's diversity initiative. Under the administrative direction of the Ventura County Medi-Cal Managed Care Commission , Mr. Bagley is tasked with ensuring that the Plan offers a workplace that is characterized by a culture of inclusion, engagement and high performance.

Mr. Bagley recently retired as vice president of human resources for Amgen Inc. He has served in executive management positions in the human resource departments for Dell Computers and for 25 years with the General Electric Company. Currently, Mr. Bagley serves on the foundation boards of California State University, Channel Islands and Gold Coast Veterans and is a past board member of the Moorpark College Foundation. He is a former member of the Presidents Circle for the Big Brothers and Big Sisters Organization.

Mr. Bagley earned a Bachelor of Science in Business Administration from Franklin University in Ohio and a Master of Education and Counseling from North Carolina Central University.

Scott H. Campbell
General Counsel

Scott H. Campbell is a partner in the Municipal Law and Special Districts practice groups of Best Best & Krieger LLP in the firm's Los Angeles office. For over 25 years, his practice has concentrated on municipal and public entity representation, construction management and litigation.

In addition to serving as GCHP's general counsel, Mr. Campbell currently serves as city attorney for the City of Avalon on Catalina Island. He also serves as general counsel for the Lake Arrowhead Community Services District and is general counsel for the Catalina Island Medical Center.

Mr. Campbell presently serves on the Board of St. Anne’s Maternity Hospital. He is the past president of the Board of Trustees of St. Anne's Foundation and of the City Attorneys Association of Los Angeles County.

Mr. Campbell graduated magna cum laude and earned a Bachelor of Arts from the University of California, Berkeley and a Juris Doctor from University of California, Los Angeles.

Gold Coast Health Plan Directors

Bob Bushey
Procurement Officer

Robert Franco
Director of Compliance

Anne Freese
Director of Pharmacy

Lupe Gonzalez
Director of Health Education, Cultural and Linguistic Services

Nilesh Hingarh, MD
Associate Chief Medical Officer

Nicole Kanter
Director of Utilization Management

Rachel Lambert
Director of Care Management

Helen Miller
Senior Director of Information Technology

Steve Peiser
Senior Director of Network Management

Pauline Preciado
Senior Director of Population Health

Kris Schmidt
Director of Strategy and Enterprise Analytics

Anna Sproule
Senior Director of Finance and Claims

Kimberly Timmerman
Director of Quality Improvement

Marlen Torres
Executive Director of Strategy and External Affairs