var myArray = [
  {
    "DealerId": "32",
     "AllowedProviders": "ATTv6,CENTURYLINK",
  },
  {
    "DealerId": "24",
    "AllowedProviders": "ACDNET",
  }
];

var providerArray = ["ATTv6","ACDNET"];

var result = myArray.some(function (item) {
    return  ((item.AllowedProviders.split(',')).some(r=> providerArray.includes(r)) && item.DealerId != 32);
});