In its simplest form, the platform model can make accessing health care faster and more convenient by providing an Uber-like interface that permits people to summon medical help wherever they are. Such a system has already been launched in several cities, including Miami, Los Angeles, and San Diego, by a company called Medicast. Click the Medicast app, describe your symptoms, and a physician is guaranteed to arrive within two hours. The service is popular among doctors who want to earn a few extra dollars during their off-hours.4
