UnitedHealth Group, based in Minnetonka, Minn., says it expects to lose $650 million on health exchange plans this year. Many people who bought the plans are in relatively poor health, the company says. Mike Bradley/Bloomberg via Getty Images hide caption

toggle caption Mike Bradley/Bloomberg via Getty Images

When deductibles and copays are high, quite a few people with insurance turn to free clinics for care. Jens Magnusson/Ikon Images/Getty Images hide caption

toggle caption Jens Magnusson/Ikon Images/Getty Images

If UnitedHealth Group. based in Minnetonka, Minn., pulls back from the Obamacare exchanges, premiums nationwide would go up around 1 percent, a Kaiser Family Foundation reports finds. Mike Bradley/Bloomberg via Getty Images hide caption

toggle caption Mike Bradley/Bloomberg via Getty Images

The entrance to Sutter Davis Hospital in Davis, Calif. Sutter Health has hospitals in more than 100 communities in Northern California; it reported $11 billion in revenue last year, with an operating profit of $287 million. Ken James/Bloomberg via Getty Images hide caption

toggle caption Ken James/Bloomberg via Getty Images

"We are now shifting our attention to changing the underlying delivery system to make it more cost effective and higher quality," says Peter Lee, executive director for Covered California, the state's health insurance marketplace. Anne Cusack/LA Times via Getty Images hide caption

toggle caption Anne Cusack/LA Times via Getty Images
Jonathan McHugh/Getty Images/Ikon Images
Medical Debt Rains Pain On Families, Even In the Sunshine State
  • Download
  • <iframe src="https://www.npr.org/player/embed/470109362/470776715" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Ohio residents feel split about Obamacare Ken Orvidas for NPR hide caption

toggle caption Ken Orvidas for NPR
Split Views On Health Overhaul In Ohio
  • Download
  • <iframe src="https://www.npr.org/player/embed/469506939/470040347" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Katherine Streeter for NPR
Hospitals Adapt ERs To Meet Patient Demand For Routine Care
  • Download
  • <iframe src="https://www.npr.org/player/embed/469809684/469972595" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Barbara Radley, of Oshkosh, Wis., has diabetes, liver failure and scleroderma. Even filing for bankruptcy early last year didn't stop her financial woes, she says. The medical bills keep piling up. Jason Houge for NPR hide caption

toggle caption Jason Houge for NPR
Medical Bills Still Take A Big Toll, Even With Insurance
  • Download
  • <iframe src="https://www.npr.org/player/embed/468892489/469692300" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A federal whistleblower suit unsealed in late February alleges that Humana knew about billing fraud involving Medicare Advantage patients and didn't stop it. Ty Wright/Bloomberg via Getty Images hide caption

toggle caption Ty Wright/Bloomberg via Getty Images

Republican presidential candidate Donald Trump has unveiled a health care plan that starts with repealing Obamacare. Maddie McGarvey for The Washington Post/Getty Images hide caption

toggle caption Maddie McGarvey for The Washington Post/Getty Images

States can't compel self-insured employers to provide claims data for analytical purposes, the Supreme Court held. Saul Loeb/AFP/Getty Images hide caption

toggle caption Saul Loeb/AFP/Getty Images
Lorenzo Gritti for NPR
In Texas, Uneven Expansion Of Obamacare Sows Frustration
  • Download
  • <iframe src="https://www.npr.org/player/embed/468255954/468607126" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Democratic presidential candidate Hillary Clinton speaks at a Las Vegas high school last Friday. Justin Sullivan/Getty Images hide caption

toggle caption Justin Sullivan/Getty Images
Hillary Clinton Hitches Her Health Care Wagon To Obamacare
  • Download
  • <iframe src="https://www.npr.org/player/embed/467736627/467841018" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Sen. Bernie Sanders, a 2016 Democratic presidential candidate, has proposed a health care policy he calls "Medicare for All." But some left-leaning economists say the plan doesn't pencil out. Bloomberg/Bloomberg via Getty Images hide caption

toggle caption Bloomberg/Bloomberg via Getty Images
Sanders' Health Plan Renews Debate On Universal Coverage
  • Download
  • <iframe src="https://www.npr.org/player/embed/467639551/467768294" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Karyn Jackson (right) helped Fernando Rico, of Pasadena, Calif., complete a Covered California application for health insurance at an enrollment fair in 2014. Allen J. Schaben/LA Times via Getty Images hide caption

toggle caption Allen J. Schaben/LA Times via Getty Images
Will HealthCare.gov Get A California-Style Makeover?
  • Download
  • <iframe src="https://www.npr.org/player/embed/466187414/468448789" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript