Dynamic parameters by converting all the parameters passed to fxn into an array using Array.prototype.slice.call(arguments, 0) and then applying the array to the function.

jsbin.eqokiw.js

var numberEval = function(value){ return (typeof value === 'number') ? value : parseInt(value,10); };

var p = [
  {"paramName":"reinYear","val":numberEval},
  {"paramName":"stateCode","val":numberEval},
  {"paramName":"countyCode","val":numberEval},
  {"paramName":"commodityCode","val":numberEval},
  {"paramName":"insurancePlanCode","val":numberEval},
  {"paramName":"practiceCode","val":numberEval},
  {"paramName":"typeCode","val":numberEval}
];

function delegate_to(_obj) {
  return function() {
    var argArray =  Array.prototype.slice.call(arguments, 0);
    return _obj.apply(_obj, argArray);
  };
}

var BlazekName = function() {
  
  var a = arguments, params = {};
  for(var i = 1; i<=a.length; i++){
    var m = p[i-1];
    params[m.paramName] = m.val( a[a.length-i] );
  }

  console.log(p[a.length-1].paramName + ': ' + params[p[a.length-1].paramName]);
  //console.log(params[p[0].paramName]);
};

var BlazekNameFilter = delegate_to(BlazekName);


//BlazekNameFilter(20,30,40,50,60,2013);
BlazekNameFilter(10,20,30,40,50,60,2013);
//BlazekNameFilter(30,60,2013);
//BlazekNameFilter(50,60,2013);
//BlazekNameFilter(2013);
//BlazekNameFilter();