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The Medicaid X Factor

October 28, 2011
9:38 am

As a study published in Health Affairs this week points out, anyone who believes they have a handle on what will happen when Medicaid undergoes an unprecedented expansion this decade is kidding themselves.

The study by a trio of professors at Harvard University’s School of Public Health shows a huge possible variation in the number of low-income Americans who enroll in Medicaid once eligibility is expanded in 2014 to include anyone below 138 percent of the federal poverty level.  The expansion, according to the researchers, could be as low as 8.5 million individuals or as high as 22.4 million, with a range of possible federal spending increases from $34 billion to $98 billion annually.

What I find particularly interesting about this study, though, is the projected impact on healthcare utilization.  Because Medicaid has lower cost-sharing than private insurance, there is an expected increase in the demand for health services among those who move from private plans to Medicaid once eligibility levels change.  Between the larger Medicaid population and this increased utilization, the Harvard researchers say the U.S. will need anywhere from 4,500 to 12,100 additional physicians to care for new Medicaid patients.

Here’s a critical passage in the report:

“These changes may pose major challenges in healthcare access because in recent years an increasing number of physicians have stopped accepting Medicaid patients.  The Affordable Care Act does provide enhanced Medicaid reimbursement to primary care clinicians for 2013-2014, but this may not be enough to ensure an adequate supply of providers for new Medicaid patients.”

Some of us have continued to argue that coverage does not necessarily mean access.  It is, without question, vitally important to provide coverage for the nation’s uninsured population, but it’s still an open question as to whether Medicaid expansion is the most effective tool for doing so.

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