“The conversations we have are like: ‘Yes, I know it’s good. Yes, I want it, but I don’t have insurance,’” said Ilan Shapiro, medical director of AltaMed, a community health network in Southern California that serves a large Hispanic population. “We’re trying to make sure everyone knows it’s free.” The confusion may represent a lack of information, or skepticism that a bill won’t follow a visit to the doctor. Liz Hamel, director of survey research at Kaiser, said it could reflect people’s experience with the health system: “People may have heard it’s available for free, but not believe it.” Congress has tried to protect patients from bills for coronavirus vaccines and tests. Early in the pandemic, it mandated that insurers waive co-payments and deductibles for both services, and set up a fund to reimburse doctors seeing uninsured patients.