Los Angeles billionaire and healthcare entrepreneur Patrick Soon-Shiong reached an agreement with insurer Blue Shield of California aimed at accelerating medical breakthroughs to doctors and patients to improve care and reduce costs. Soon-Shiong, a former UCLA surgeon and drug-company executive, announced the deal Tuesday between his NantHealth company and Blue Shield, a nonprofit insurer with 3.3 million customers in California. They will partner with St. John's Health Center in Santa Monica to create a "continuous learning center" to work on spreading personalized medicine and best practices to more healthcare providers.