Insurers are a new threat to doctors and hospital systems that have made big investments in physician practices
By: Anna Wilde Mathews
The Wall Street Journal
Some of the largest health insurers are capitalizing on recent massive deals by steering patients toward clinics they now own, controlling both delivery and payment for health care.
The trend creates worries for rival doctor groups and hospital companies that have invested deeply in buying up physician practices, which now increasingly compete against offerings from insurers.