Governance at a Glance

Chairman of the board
Financial expert
Committee List
Board Members Audit Compensation Nominating and Corporate Governance
John Chiang  
Nominating and Corporate Governance
Matthew Mazdyasni  
Nominating and Corporate Governance
David G. Schmidt  
Nominating and Corporate Governance

Committee Charters

Kenneth Sim, M.D. Headshot

Kenneth Sim, M.D.

Dr. Kenneth Sim is the Co-Founder and Executive Chairman of Astrana Health, formerly known as ApolloMed. He has been the Chairman of Astrana Health Management, formerly known as Network Medical Management (NMM), since 2013 and has been a member of the Board of Directors since 2006. Dr. Sim also serves as the Chairman of the board of APC. Dr. Sim is a Fellow of the American College of Surgeons and was awarded the Independent Physician Leadership Award in 2014 by the Los Angeles County Medical Association. Dr. Sim is also a member of the Governing Board of Directors at Alhambra Hospital Medical Center and a Board Member on the National Council of Asian Pacific Islander Physicians.

As an entrepreneur, Dr. Sim founded “Healthcare City” in the City of Industry, California, which helped streamline the healthcare process by providing outpatient health services at one location which included a surgical center, a senior wellness center and laboratory, radiology and urgent care services. He received his bachelor’s degree from the University of California, Los Angeles and received his medical training from the Loma Linda University School of Medicine and the Autonomous University of Guadalajara, Guadalajara, Mexico.

Thomas S. Lam, M.D., M.P.H. Headshot

Thomas S. Lam, M.D., M.P.H.

Dr. Thomas Lam is the Co-Founder and Vice Chairman of Astrana Health, formerly known as ApolloMed. Dr. Thomas Lam has been a member of Astrana Health’s Board of Directors since January 2016. Dr. Lam has served as Chief Executive Officer of Astrana Health Management, formerly known as Network Medical Management, since January 2006 and has been a member of Astrana Health Management’s Board of Directors since 2005. From January 2006 to September 2014, Dr. Lam was the Chairman and CEO of APC. Since October 2014, he has served as the Chief Executive Officer and Chief Financial Officer of APC.

Dr. Lam was the recipient of the Corporate Citizens of the Year Award from the Board of Directors of East Los Angeles College Foundation in April 2014. In February 2015, the YMCA Board of Directors of West San Gabriel Valley honored Dr. Lam as the recipient of the Heart of the Community Award. Dr. Lam received his medical training from New York Medical College and gastroenterology training from Georgetown University. Dr. Lam serves as the nominee of Astrana Health Management.

John Chiang Headshot

John Chiang

Mr. John Chiang most recently served as California State Treasurer from 2015 to 2019. From 2007 to 2015, he served as California State Controller. Prior to this, he served on the California Board of Equalization from 1999 to 2006. Mr. Chiang began his career as a tax law specialist for the Internal Revenue Service. He then worked as an attorney for then-California State Controller Gray Davis and also worked on the staff of California Senator Barbara Boxer. Mr. Chiang graduated with honors with a Bachelor of Science degree in finance from the University of South Florida and received his Doctor of Laws degree from Georgetown University Law Center.

Weili Dai Headshot

Weili Dai

Boasting over 25 years of experience in the technology industry, Ms. Dai is the cofounder of global semiconductor company Marvell Technology where she served as President and Director until 2016. In 2018, Ms. Dai cofounded MeetKai, Inc., an AI-enabled personalized conversational search company, and continues to serve as its Executive Chairwoman today. She also serves as Chairman of the Board at Lark Health, a healthcare technology company aimed at delivering scalable, virtual chronic conditions care and preventive healthcare through conversational AI. Ms. Dai has been honored on Forbes’ “World’s Most Powerful Women” list and was named an EY Entrepreneur of the Year. She is recognized for her visionary work at Marvell and in technology advocacy for women and minorities. Ms. Dai holds a Bachelor of Science degree in Computer Science from the University of California, Berkeley.

J. Lorraine Estradas, R.N., B.S.N., M.P.H. Headshot

J. Lorraine Estradas, R.N., B.S.N., M.P.H.

Ms. Estradas currently serves as the Chief Executive Officer of Arroyo Vista Family Health Center, a non-profit network of community health centers serving Greater Northeast Los Angeles since 1981. Under Ms. Estradas’ leadership, Arroyo Vista has grown from a small storefront clinic to a healthcare delivery network of four health centers and a mobile medical clinic serving the healthcare needs of medically underserved families within its local communities as a Federally Qualified Health Center (FQHC). Ms. Estradas also currently serves as a City Health Commissioner in Los Angeles. Ms. Estradas has a Bachelor of Science degree in Nursing as well as a master’s degree in Public Health, both from UCLA. While pursuing an education, Ms. Estradas continued advocacy for access to quality health care for the poor and medically underserved in Los Angeles. Her experience included hospital and community public health nursing at UCLA, the Eastern Los Angeles Regional Center for the Developmentally Disabled, the State of California Department of Health Services – Rural Health Farmworker Division, and Arroyo Vista Family Health Center.

Mitchell W. Kitayama Headshot

Mitchell W. Kitayama

Mr. Kitayama has been the Lead Independent Director and a Board member since December 2017. Mr. Kitayama has served as Chairman of the board of directors of Winslow Drake, a boutique investment advisory and wealth management practice, since June 2016 and as Managing Director of MMK & Associates, which advises financial institutions, medical groups, and private companies, since May 2009. From April 2005 to May 2009, he served as the Chief Executive Officer, Vice Chairman, and Director of Metro United Bank, and as the Executive Vice President for its holding company, MetroCorp. He served Senior Vice President Treasurer of East West Bank. He served as Chairman of the American Diabetes Association-Los Angeles and on the National Finance Committee. Mr. Kitayama served as a Trustee and Treasurer for the Los Angeles Ronald McDonald House and served on the Finance and Investment Committees for the Ronald McDonald House Charities of Southern California. He served on the President’s cabinet and the Alexis de Tocqueville Society for the United Way of Greater Los Angeles. He also served on the board for the National Banker’s Association. He is a Certified Cash Manager and received a B.A. in Biology with a Chemistry Minor and an M.B.A. from Baylor University.

Linda Marsh Headshot

Linda Marsh

Ms. Linda Marsh is currently the Senior Executive Vice President of AHMC Healthcare Inc., a fully integrated hospital health system in Southern California with over 1,200 acute care beds and over 7,000 employees. She joined AHMC Healthcare in 1999 and oversees all financial matters for seven acute care hospitals: San Gabriel Valley Medical Center, Garfield Medical Center, Anaheim Regional Medical Center, Whittier Hospital Medical Center, Alhambra Hospital, Monterey Park Hospital and Greater El Monte Community Hospital.

Additionally, Ms. Marsh is responsible for all federal, state and local government relations, as well as all risk management activities. Ms. Marsh is a Board member of the Hospital Association of Southern California, a Board member of Private Essential Access Community Hospitals and also a Board member of the American Red Cross. She is also an active member of the Healthcare Financial Management Association. She also chairs or is a participating member of numerous hospital governing boards, hospital committees and community organizations. Ms. Marsh received a Bachelor of Science degree in economics and a master’s degree in accounting from the University of Southern California. She also completed a healthcare executive program at the University of Colorado.

Matthew Mazdyasni Headshot

Matthew Mazdyasni

Mr. Matthew Mazdyasni previously served as Executive Vice-President, Chief Administrative and Chief Financial Officer of HealthCare Partners Holding, LLC until February 2014. As a member of the senior executive team, Mr. Mazdyasni significantly contributed to HealthCare Partners’ success, which led to its acquisition by DaVita, Inc. in November 2012. Prior to joining HealthCare Partners in 1982, he worked for national and local public accounting firms. Mr. Mazdyasni holds a Master of Science degree in accounting from the University of Kentucky.

David G. Schmidt Headshot

David G. Schmidt

Mr. David Schmidt has been a member of Astrana Health’s Board of Directors since May 2013. He has served since January 2011 as Principal of Schmidt & Associates, a consultancy practice that focuses on strategic planning and implementation in the healthcare industry. From April 2015 to June 2019, Mr. Schmidt also served as the CEO of the TPG-International Health Academy, a company that organizes trade missions to expose Senior Health Plan and Health System executives from the United States to other country’s health systems. From August 2002 to December 2010, he served as the CEO and Member of the Board of SCAN Health Plan, a provider of Medicare Advantage plans.

From 2000 to 2002, he served as CEO of Medicheck, a firm that provided Internet-based financial service management to healthcare organizations, which was sold to Passport Health Communications. He served on Passport’s Board from 2002 to 2006. From 1992 to 1998 he was the Senior Vice President of Sales and Customer Services for Care America/Blue Shield Health Plan and Regional Vice President for FHP Healthcare. He received a bachelor’s in economics from UCLA and a Master of Business Administration from The Anderson School of Management at UCLA. Prior to his healthcare experience, he held senior management roles in manufacturing companies including Avery Dennison. He also serves on the Board of Beacon Healthcare Systems and was a founding board member of the SCAN Foundation, a 501©(3) corporation focused on long-term care in the U.S.