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The IHA Board of Directors guides our organization’s initiatives and programs—sharing ideas and having discussions that shape healthcare’s future. They meet regularly to stay on top of industry trends, make strategic decisions, and trade best practices. Our board is made up of 40 voting members and additional liaison non-voting members from organizations across the healthcare industry.

Health plans 

  • Aetna: Jeff Hermosillo, California Market President
  • Alameda Alliance for Health: Scott Coffin, Chief Executive Officer
  • Anthem Blue Cross: Mark Reynolds, Vice President and Chief Operating Officer (1), (2)
  • Blue Shield of California: Peter Long, PhD, Executive Vice President, Strategy and Health Solutions
  • Cigna: Peter Welch, President and General Manager, California (1)
  • Health Net: Martha Santana-Chin, MBA, Government Programs Officer (1), (2)
  • Inland Empire Health Plan: Edward Juhn, MD, MBA, MPH, Chief Quality Officer (1)
  • Kaiser Foundation Health Plan: Michelle Gaskill-Hames, BSN, MHA, Chief Operating Officer/Chief Strategy, Growth and Experience Officer (1)
  • L.A. Care Health Plan: Sameer Amin, MD, Chief Medical Officer
  • UnitedHealthcare: Susan Tonkin, Chief Operating Officer, California


Provider groups 

  • Community Health Center Network: Andie Martinez Patterson, Chief Executive Officer
  • Family Care Specialists Medical Group: Hector Flores, MD, Medical Director
  • Health Care LA, IPA: Sabra Matovsky, MBA, FACHE, CEO
  • Hill Physicians Medical Group: David Joyner, MA, MBA, Chief Executive Officer (1)
  • Optum California: Amar Desai, MD, MPH, President and Chief Executive Officer
  • Optum Orange County (formerly Monarch HealthCare): Raymond J. Chicoine, MBA, President (1), (2)
  • Palo Alto Medical Foundation: Elizabeth Vilardo, MD, MBA, President and Chief Executive Officer
  • The Permanente Medical Group: Yi-Fen (Irene) Chen, MD, FACP, CPPS, Associate Executive Director
  • Sansum Clinic: Chad Hine, Chief Operating Officer
  • Sharp Rees-Stealy Medical Centers: Stacey Hrountas, MPH, Chief Executive Officer (1)


Health systems

  • Cedars-Sinai Health System: Richard Jacobs, MPH, Executive Vice President and Chief Strategy Officer
  • Dignity Health: Tammy Wilcox, Senior Vice President, Managed Care
  • John Muir Health: Elizabeth Mahler, MD, VP, Chief Clinical Officer, Value Based Care
  • Martin Luther King Jr. Community Hospital: Elaine Batchlor, MD, MPH Chief Executive Officer
  • MemorialCare Health System: Barry Arbuckle, PhD, President and Chief Executive Officer (1), (2)
  • Providence Health & Services: David Mast, Chief Executive, Medical Group Foundations, Los Angeles Market (1)
  • Santa Clara Valley Health and Hospital System: René G. Santiago, MCP, MPH Deputy County Executive and Director
  • Stanford Health Care: Gary M. May, MBA, Vice President, Managed Care & Payer Relations
  • Sutter Health: Conrad M. Vial, MD, Senior Vice President, Chief Clinical Officer
  • U.C. Davis Medical Center: Ann Boynton, Associate Chief Strategy Officer


Purchasers and consumers

  • CalPERS: Donald Moulds, PhD, Chief Health Director, Health Benefits Program (1)
  • Covered California: Doug McKeever, Chief Deputy Executive Director, Program (1), (2)
  • San Francisco Health Service System: Abbie Yant, RN, MA, Executive Director
  • U.C. Office of the President: Susan Pon-Gee, MBA, Senior Director, Health & Welfare Benefits


At large

  • Bristol-Myers Squibb: Jill Carroll, Strategic Account Executive
  • Cozeva – Applied Research Works, Inc.: Khanh Nguyen, Chief Executive Officer
  • Genentech: Nina Malik, Medical Affairs Executive Director – CA Ecosystem
  • MedPOINT Management: Kimberly Carey, President and Chief Executive Officer
  • Pfizer: John D. Capretta, CMR, MBA, Regional Business Director
  • Vituity: Theo Koury, MD, FACEP, President


Liaison (non-voting)

  • California Department of Health Care Services: Erika Sperbeck, Chief Deputy Director of Policy and Program Support
  • California Department of Managed Health Care: Mary Watanabe, Director
  • California Health Care Foundation: Kristof Stremikis, MPP, MPH, Director, Market Analysis and Insight
  • Centers for Medicare & Medicaid Services Region IX: Ashby Wolfe, MD, MPP, MPH, Chief Medical Officer
  • RAND Corporation: Cheryl L. Damberg, PhD, MPH, Distinguished Chair, Health Care Payment Policy and Principal Senior Researcher
  • Stanford University, School of Medicine: Arnold Milstein, MD, MPH, Professor of Medicine and Director, Clinical Excellence Research Center
  • UC Berkeley, School of Public Health: James C. Robinson, PhD, MPH, Leonard D. Schaeffer Professor of Health Economics, Endowed Chair in Health Economics and Policy, Director, Berkeley Center for Health Technology
  • UC Berkeley, School of Public Health: Stephen M. Shortell, PhD, MPH, MBA, Professor of Health Policy and Management and Dean Emeritus



  • Stanford Health Care: Tom Williams, DrPH, MBA, MPH, Vice President and General Manager of Accountable Care Operations and Strategy
  • Stanford University: Alain C. Enthoven, PhD, Marriner S. Eccles Professor of Public and Private Management


(1) IHA Executive Committee member

(2) IHA Officer

(3) IHA Governance Committee chair