Not the same thing. MA, like all of the country, has a shortage of primary care physicians. I beleive some 30 to 40 percent of MA primary care physicians have stopped taking patients. But that would mean some 60 to 70 percent have not. Also, this doesn't address any other doctor.
Like the NCPA, you leap to a conclusion without fully supporting it.
As for explaining it, it's simple. More people are covered, so more are seeking service. At least now those services are paid for, meaning the hospital doesn't have to raise costs to pay for those in the ER, or more likely the outpatient treatment center off the ER.