No. Austin Frakt walks through the research details to get you there. Here is a summary, but this is the money quote:
"there is no credible evidence that Medicaid results in worse or equivalent health outcomes as being uninsured. That is Medicaid improves health. It certainly doesn’t improve health as much as private insurance, but the credible evidence to date–that using sound techniques that can control for the self-selection into the program–strongly suggests Medicaid is better for health than no insurance at all." (itals in the original post)
Update: Harold Pollack weighs in.