Companies owned by Milwaukee-basedAssurant Health will pay consumers $30.8 million in rebates nationwide — more than any other health insurer — for violating an Obamacare rule that requires health insurers to spend the vast majority of premiums on medical care or activities to improve health care quality. The next-closest total rebate amount paid by a health insurer for 2013 was UnitedHealthcare's Golden Rule Insurance, which owes customers $27.5 million in rebates. A spokeswoman for Assurant Health said Monday that the company sells major medical insurance in more states than its competitors, which is one reason for the high dollar figure.