Hospitals and other health care systems are eager to find patterns in their patient data that can help treat and prevent illness and cut costs. In England, the National Health Service is collecting the medical histories of up to 55 million patients to share with third parties. Here in the U.S., Google will help the hospital chain HCA Healthcare store and analyze health data. Amazon, IBM and Microsoft have similar partnerships. Marketplace’s Amy Scott speaks with Deven McGraw, chief regulatory officer at the health records startup Ciitizen. She’s also an adviser to Verily, a sister company to Google. McGraw says predictive analytics can help providers anticipate things like which patients are at risk of coming back to the hospital after surgery.