Start-ups are offering access to doctors, prescription drugs and wellness programs as fast and easy as hailing an Uber driver. Experts say this is the early stages of a movement that could disrupt the health services industry, which critics have long contended suffers from soaring costs and reduced access to care. Seven in 10 Americans in a recent Gallup poll said they believed health care was “in a state of crisis” or had “major problems.”

“Health care delivery is so broken that we need to explore new channels — new conduits — and this represents one of them,” said Dr. Eric Topol, a cardiologist and the author of “The Patient Will See You Now.”

The on-demand economy, which offers consumers immediate access to goods and services, surged 58 percent in 2017 from the previous year to an estimated $75.7 billion, according to a study by Rockbridge Associates, a market research firm.