Dr. John Wigneswaran (Dr. Wig) is Walmart’s Chief Medical Officer leading safety, quality, and training, the Walmart Healthcare Research Institute, clinical program development, innovation, and medical affairs. He joined Walmart from Cigna where he served as Chief Medical Officer for Express Scripts. Prior to that, he held a variety of roles in the pharmaceutical, medical device, PBM and healthcare services industries, including DaVita, Fresenius Medical Care; Gambro, Nephroceuticals and Johnson & Johnson. He has over a decade of clinical experience as a practicing nephrologist and is a renal fellowship preceptor in the Division of Nephrology at Rhode Island Hospital/Brown University. Dr. Wig completed his undergraduate studies at Cornell University, attended medical school at the Tufts University School of Medicine, and completed his nephrology fellowship at New York-Presbyterian/Weil Cornell Medical center and internal medicine residency at Rhode Island Hospital/Brown University. He received his MBA from the Massachusetts Institute of Technology Sloan School of Management. Dr, Wig currently resides in Boston, MA.
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Centers and Practice Areas
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Asia Center
Extends the reach and impact of the Milken Institute to the Asia-Pacific region
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Center for Financial Markets
Conducts research and constructs programs designed to facilitate smooth and efficient operation of financial markets
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Center for the Future of Aging
Advances healthy longevity and financial security for all through high-impact policies, research, convenings, and multisector partnerships.
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Center for Public Health
Develops research, programs, and initiatives designed to envision and activate sustainable solutions leading to better health for individuals and communities worldwide.
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Center for Regional Economics and California Center
Analyzes the dynamics that drive job creation and promote industry expansion
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Center for Strategic Philanthropy
Empowers philanthropists to effectively address some of the world's most urgent problems
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FasterCures
Clears roadblocks that prevent medical breakthroughs from reaching patients sooner
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Financial Innovations Labs
Addressing society's greatest challenges through a financial lens
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Global Market Development
Working with government partners in emerging and developing economies to build strong, domestic financial markets.
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Milken Center for Advancing the American Dream
Anyone with a dream should have the opportunity to make it come true—through determination and an economic system that works for all
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Research Department
Addressing global policy issues on Health Economics, International Finance, and Regional Economics
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