Maine health officials will be working with the Alexander Group over the next year to improve the state’s program. They will also study whether to expand the program under the federal health care overhaul. Maine’s Department of Health and Human Services announced on Tuesday that it’s partnering with the Alexander Group, led by Gary Alexander, who ran the Medicaid program in Rhode Island. The department says the group will seek to address the financial challenges facing Maine’s Medicaid program. Part of the work will focus on studying the short-and-long-term impact of expanding Medicaid on the state and on those currently in the program. A spokeswoman for Republican Gov. Paul LePage says the governor remains concerned about the costs of the expansion and continues to seek greater flexibility in running the Medicaid program in Maine.