Health care’s digital transformation will take center stage in Orlando, Fla., next week at the industry’s most influential technology conference, a gathering whose exponential growth is a metaphor for the change sweeping through one of America’s biggest economic sectors.

Walmart workers can now see a doctor for only $4. The catch? It has to be a virtual visit. The retail giant recently rolled back the $40 price on telemedicine, becoming the latest big company to nudge employees toward a high-tech way to get diagnosed and treated remotely. But patients have been slow to embrace […]