JD straddles the worlds of data, information technology, and health policy. He started a managed mental health program, co-founded data analytics company HCIA, and helped start HealthGrades. All the while appearing regularly in Health Affairs (including much sparring with other policy heavyweights) and writing two health policy books (the latter of which contradicted much of the first!). Where JD goes, there’s always excitement. Today though he’s joining us to give his, always welcome, two cents about marketplaces.