<p>The California Medical Association filed a lawsuit Friday to block a state budget cut that would reduce the amount doctors are paid to treat the poor.</p>
<p>If the cut goes through, the doctors say the number of physicians who treat the state's 6.5 million Medi-Cal patients is likely to fall. Those patients then would be forced into seeking emergency room treatment -- at costs that could greatly exceed the $237 million in budget savings, according to the doctors.</p>