MD Insider has scanned billions of health records to help patients find doctors and health systems provide better care. But the big-data startup isn't done yet and has raised $12 million to expand its pool of proprietary data as well as grow its operations and sales and marketing efforts. The Santa Monica, California, healthcare technology company has processed and analyzed health records covering more than 250 million patients, 850,000 doctors, 6,000 hospitals, and 30,000 diseases and conditions...