Study: "up to 80% of people participating in ObamaCare’s Medicaid expansion have been shifted off their private insurance"

See ObamaCare Shunts My Patients Into Medicaid: Knocked out of private insurance, they are forced to settle for longer waits and worse care. From the WSJ, by Jeffrey A. Singer. Excerpts: 

"A recent Boston University/Harvard Medical School study suggests that up to 80% of people participating in ObamaCare’s Medicaid expansion have been shifted off their private insurance. These patients’ plans—that they liked, and were told they could keep—did not meet Affordable Care Act requirements, and were wiped out."

"they suffer in the long run by being trapped in a subpar health-care system. A Medicaid card does not translate into quality medical care."

"Only 45% of doctors are now accepting new Medicaid patients, according to a recent survey by the health-care company Merritt Hawkins. This number has dropped from 55% in the past five years."

"numerous studies have shown Medicaid patients have significantly worse outcomes than those with private insurance."

 Dr. Singer practices general surgery in Phoenix, Ariz., and is an adjunct scholar at the Cato Institute.