Study finds that expanding Medicaid means health problems get found and health improves. Among those with common chronic diseases, 42% said they got diagnosed after enrolling in expanded Medicaid. Lead author, Ann-Marie Rosland, MD, MS worked with CBSSM's Susan Goold, MD, MHSA, MA and Jeffrey Kullgren, MD, MS, MPH and others carrying out an official evaluation of the Healthy Michigan Plan.