Covered California data-mining project will collect patient health, insurance info

California's health insurance exchange wants to know why you got sick this summer. With 1.4 million people enrolled, the state-run marketplace is embarking on an ambitious effort to collect insurance company data on prescriptions, doctor visits and hospital stays for every Obamacare patient. Covered California says this massive data-mining project is essential to measure the quality of care that patients receive and to hold health insurers and medical providers accountable under the Affordable Care Act. The state in April signed a five-year, $9.3-million contract with Truven Health Analytics Inc. of Michigan to run the database.