“For many people receiving care from one of these mixed-model ACOs, the shift to full participation in value-based care will be gradual and subtle as the contracts between the ACO and their insurance company migrate to ACO-style contracts. Over time, patients should notice that care gets more convenient, more proactive, and more effective.”“The ingredient that’s been missing in healthcare for too long is real competition on value,” says Niyum Gandhi, associate partner. “With the latest additions, more than half of the population—52 percent—live in Primary Care Service Areas served by ACOs, up from 45 percent this past August. The competition between ACO-based healthcare providers and traditional fee-for-service providers should give reform a good push forward. But even more powerful will be the competition between ACOs, which will give them the incentive to evolve as quickly as possible. And we estimate that at least 28 percent of the population now live in communities with two or more ACOs, up from 17 percent. That’s a remarkable development and—for patients, ultimately--a hopeful one.” About Oliver Wyman Oliver Wyman is a global leader in management consulting. With offices in 50+ cities across 25 countries, Oliver Wyman combines deep industry knowledge with specialized expertise in strategy, operations, risk management, and organization transformation. The firm's 3,000 professionals help clients optimize their business, improve their operations and risk profile, and accelerate their organizational performance to seize the most attractive opportunities. Oliver Wyman is a wholly owned subsidiary of Marsh & McLennan Companies [NYSE: MMC]. For more information, visit www.oliverwyman.com. Follow Oliver Wyman on Twitter @OliverWyman.