UnitedHealth is already the biggest US health insurer. Now it wants to make going to the doctor its next $100 billion business.

UnitedHealth Group expects its healthcare delivery business OptumCare to be a $100 billion-a-year business by 2028. The OptumCare business already employs or works with 38,000 doctors. At the Bernstein Strategic Decisions Conference, analyst Lance Wilkes asked UnitedHealth Group executives how the company plans to get there. The executives said the plan includes building upon the footprint the company established over the last decade.