There are more than 2 million homebound people in the U.S. When they get sick, many require expensive ambulance rides and hospital stays, leaving Medicare or Medicaid to pick up the bill. Thomas Cornwell’s nonprofit, Home Centered Care Institute, is training doctorsto visit patients instead—a practice that could save insurers upwards of $1,000 per beneficiary annually, according to a pilot project by the Center for Medicare & Medicaid’s Innovation Center. Cornwell’s five-year-old institute has trained hundreds of physicians on its home-care method via intensive, 12-week programs and a new two-day session. In fall 2017, the HCCI will open six training centers in hospitals across the country, including New York’s Mount Sinai. Cornwell has also partnered with Senator Ed Markey, a Democrat from Massachusetts, to introduce a bill in Congress to make home-based care a Medicare prescription-drug benefit. Cornwell says the bill, which has bipartisan support, would reinvigorate Medicare and Medicaid while making medicine more humane and patient-centered. “I want house calls to be part of the fabric of our health care system,” he says.