Southern Arizona’s major health-care providers have joined together in an effort to advance health-insurance enrollment.

The collaboration, which is launching a nearly $200,000 ad campaign, includes Tucson Medical Center, the University of Arizona Medical Center, Carondelet Health Network and Northwest Healthcare. Other participating entities are Sinfonia Healthcare Corp., Blue Cross Blue Shield of Arizona and Tucson Regional Opportunities Inc.

Leaders with the effort say the “Health Care I Can Afford?” campaign begins Monday and will run through March 31 using television, billboards, radio (in English and Spanish), and online components.

The groups want to help provide easy access to information and health insurance to local residents. The timing is connected to the reinstatement of childless adults to Arizona’s Medicaid program and the approaching March 31 deadline for enrolling in the federal health-care marketplace.

The collaborative ad campaign was announced on the same day that the nonprofit group Enroll America released a study saying 70 percent of uninsured Americans have not yet been to their state’s online health marketplace.

The study said that uninsured Americans are assuming they can’t afford monthly premiums and many are not aware of the tax subsidies that can substantially reduce monthly payments for those who qualify.

Enroll America is stepping up its outreach in Arizona and expects to do education in local communities for the next two years.

According to the U.S. Census Bureau’s most recent American Community Survey, 17 percent of working-age Pima County residents and 12 percent of children are uninsured. That works out to about 140,000 people.