Erickson Retirement Communities, a Catonsville, MD-based developer of retirement communities, plans to open its first free-standing medical practice for senior citizens and will consider expanding with similar off-site offices in Maryland and throughout the country. The new Erickson office will serve adults 65 and older who are covered by Medicare. The move comes at a time when threatened cuts in Medicare reimbursement rates could make it increasingly difficult for physicians to treat Medicare patients.