His endorsement of the expansion came hours after the federal government agreed to grant Florida a conditional waiver to privatize Medicaid statewide for the state's more than 3 million current recipients, more than half of which are children or people under age 21.

Scott and GOP lawmakers have repeatedly warned that Medicaid's roughly $21 billion annual costs were consuming Florida's budget and proposed the managed care plan to save money and improve care.

The privatization expands on a five-county pilot program that has been rife with problems. Critics worry for-profit providers are scrimping on patient care and denying medical services to increase profits. Some doctors have dropped out of the pilot program, complaining of red tape and that the insurers deny the tests and medicine they prescribe. Patients have complained they struggled to get doctor's appointments.

Several health plans also dropped out of the pilot program, saying they couldn't make enough money. Patients complained they were bounced from plan to plan with lapses in care. Nearly half of the 200,000 patients enrolled in the pilot have been dropped from at least one plan, federal health officials noted at one point during negotiations.

Lawmakers say they have fixed the pilot program's shortcomings, with provisions including increased oversight and more stringent penalties, including fining providers up to $500,000 if they drop out. The measures also increase doctors' reimbursement rates and limit malpractice lawsuits for Medicaid patients in hopes of increasing doctor participation in the program.